Dexcom G5 Mobile User manual

Dexcom G5 Mobile CGM System Getting Started Guide • 1
Getting Started Guide
for Dexcom G5
®
Mobile Continuous
Glucose Monitoring (CGM) System

2 •Dexcom G5 Mobile CGM System Getting Started Guide

Dexcom G5 Mobile CGM System Getting Started Guide • 1
Table of Contents
Section 1: Welcome ....................................................................................3
1.1 Training Options ............................................................................................................. 3
Section 2: Indications for Use and Safety Statement...............................4
Section 3: Risks and Benefits .................................................................. 12
3.1 Risks ..............................................................................................................................12
3.2 Benefits .........................................................................................................................13
Section 4: System Overview .................................................................... 15
4.1 Components...................................................................................................................15
4.2 Choose Display Device..................................................................................................16
Section 5: App Setup ............................................................................... 17
5.1 Install App......................................................................................................................17
5.2 Enter Initial BG Meter Values .......................................................................................18
5.3 View Home Screen ........................................................................................................19
5.4 Smart Device Settings ................................................................................................. 20
Section 6: Receiver Setup ........................................................................21
6.1 Set Up Receiver ............................................................................................................ 21
6.2 Insert Sensor................................................................................................................ 23
6.3 Attach Transmitter ...................................................................................................... 25
6.4 Confirm Communication and Start Sensor ................................................................ 26
6.5 Set Up Alert Sounds..................................................................................................... 27
6.6 Enter Initial BG Meter Values ..................................................................................... 29
6.7 View Receiver Trend Screen........................................................................................ 30
Section 7: App and Receiver Trend Arrows.............................................31
Section 8: App and Receiver 1, 3, 6, 12 or 24 hour Trend Graph ............31

2 •Dexcom G5 Mobile CGM System Getting Started Guide
Section 9: App and Receiver Enter BG Meter Values Every 12 Hours ....32
Section 10: End Sensor Session ..............................................................33
10.1 Remove Sensor and Transmitter............................................................................... 33
10.2 App: Ending Sensor Session Early ............................................................................ 34
10.3 Receiver: Ending Sensor Session Early .................................................................... 35
Section 11: Alarm, Alerts and Advanced Alerts ......................................36
11.1 Urgent Low Glucose Alarm......................................................................................... 36
11.2 Change Low and High Alerts ..................................................................................... 36
11.3 Advanced Alerts ......................................................................................................... 36
Section 12: Using Dexcom G5 for Treatment Decisions..........................37
12.1 Treatment Decisions: The Basics .............................................................................. 37
12.2 Treatment Decisions: Beyond The Basics ................................................................ 39
Section 13: Troubleshooting ...................................................................41
13.1 Sensor Glucose Readings .......................................................................................... 41
13.2 Calibration Errors....................................................................................................... 44
13.3 Transmitter Errors...................................................................................................... 45
13.4 Adhesive ..................................................................................................................... 46
Section 14: Warranty................................................................................47
14.1 Receiver Warranty Information ................................................................................ 47
14.2 Transmitter Warranty Information ........................................................................... 49
Section 15: Travel .....................................................................................52
Section 16: Need Help? You’re Not Alone!...............................................53
16.1 Dexcom Technical Support........................................................................................ 53
16.2 Dexcom Care Team .................................................................................................... 53
16.3 Sales Support Team ................................................................................................... 54
16.4 Web-based Education................................................................................................ 54
16.5 Dexcom Share and Follow ......................................................................................... 54

Dexcom G5 Mobile CGM System Getting Started Guide • 3
Section 1: Welcome
Congratulations on making the Dexcom G5®Mobile Continuous Glucose Monitoring
(CGM) System part of your life!
The Dexcom G5 Mobile CGM System (Dexcom G5) allows you to see real-time
continuous glucose readings every five minutes for up to seven days. These readings
can help you find trends and patterns in your glucose levels, allowing you to see where
your glucose levels have been, which direction they are headed, and how fast they are
rising or falling.
1.1 Training Options
Knowing about the Dexcom G5 is your first step in creating a successful CGM
experience. Before using it, learn about it.
You can train on the Dexcom G5 in the following ways:
• Self train with the Dexcom G5 Mobile Tutorial
• Train with our Dexcom Care Team: 1-877-339-2664, Monday through Friday, 6
am to 5 pm PST
• Train with your healthcare professional using this Getting Started Guide
Before you begin and anytime you have questions, review the Dexcom G5 Mobile CGM
User Guide (user guide). Your options to get the full user guide:
• Download as an eBook or view/print in a .pdf format
dexcom.com/guides
• Online request form to receive a free printed copy
dexcom.com/guides
• Request a free copy by mail
Using the business reply card found in the back of this guide
• Request a free copy by phone
1-888-738-3646 ext. 4300

4 •Dexcom G5 Mobile CGM System Getting Started Guide
Section 2: Indications for Use and Safety
Statement
Indications for Use
The Dexcom G5 Mobile Continuous Glucose Monitoring System (Dexcom G5) is a
glucose monitoring system indicated for the management of diabetes in persons age
2 years and older. The Dexcom G5 is designed to replace fingerstick blood glucose
testing for diabetes treatment decisions.
Interpretation of the Dexcom G5 results should be based on the glucose trends and
several sequential readings over time. The Dexcom G5 also aids in the detection of
episodes of hyperglycemia and hypoglycemia, facilitating both acute and long-term
therapy adjustments.
The Dexcom G5 is intended for single patient use and requires a prescription.
Important User Information
Failure to use the Dexcom G5 and its components according to the instructions for use
and all indications, contraindications, warnings, precautions, and cautions may result in
you missing a severe hypoglycemia (low blood glucose) or hyperglycemia (high blood
glucose) occurrence and/or making a treatment decision that may result in injury. If
your glucose alerts and readings from your Dexcom G5 do not match your symptoms
or expectations, use a fingerstick blood glucose value from your blood glucose meter to
make diabetes treatment decisions. Seek medical attention when appropriate.
Please review the product instructions before using the Dexcom G5. Indications,
contraindications, warnings, precautions, cautions, and other important user
information can be found in the product instructions that are included with, or
accompany, the Dexcom G5. Discuss with your healthcare professional how you should
use the information displayed on the Dexcom G5 to help manage your diabetes. The
product instructions contain important information on troubleshooting the Dexcom G5
and on the performance characteristics of the system.
Contraindications
MRI/CT/ Diathermy
Remove the Dexcom G5 sensor, transmitter, and receiver before Magnetic

Dexcom G5 Mobile CGM System Getting Started Guide • 5
Resonance Imaging (MRI), Computed Tomography (CT) scan, or high-frequency
electrical heat (diathermy) treatment.
The Dexcom G5 has not been tested during MRI or CT scans or with diathermy
treatment. The magnetic fields and heat could damage the components of the Dexcom
G5, which may cause it to display inaccurate blood glucose readings or may prevent
alerts.
Medications
Taking medications with acetaminophen while wearing the Dexcom G5 may
inaccurately raise the glucose readings generated by the Dexcom G5. The level of
inaccuracy depends on the amount of acetaminophen active in your body and is
different for each person. Do not rely on continuous glucose monitoring (CGM) data
produced by the Dexcom G5 if you have recently taken acetaminophen.
Warnings
Sensor Fractures
Do not ignore sensor fractures. Sensors may fracture or detach from the sensor pod
on rare occasions. If a sensor breaks and no portion of it is visible above the skin,
do not attempt to remove it. Seek professional medical help if you have symptoms
of infection or inflammation—redness, swelling or pain—at the insertion site. If you
experience a broken sensor, please report this to our Technical Support department at
1.877.339.2664 (toll free) or 1.858.200.0200.
Do Not Use Damaged Goods
If the Dexcom G5 Receiver or Dexcom G5 Transmitter is damaged or cracked, do not
use it. This could create an electrical safety hazard causing possible electrical shocks
resulting in injury. In addition, a damaged or cracked Dexcom G5 Receiver or Dexcom
G5 Transmitter may cause the Dexcom G5 System not to function properly.
Choking
Do not allow young children to hold the sensor or transmitter without adult supervision.
The sensor and transmitter include small parts that may pose a choking hazard.
The following warnings may result in the consequence of missing severe hypoglycemia
(low blood glucose) or hyperglycemia (high blood glucose) or making a treatment
decision that results in injury:

6 •Dexcom G5 Mobile CGM System Getting Started Guide
Review Training Materials
Thoroughly review the training materials included with your Dexcom G5 before
use. Incorrect use of the Dexcom G5 could lead you to misunderstand information
produced by the system or might affect the system’s performance.
Diabetes Treatment Decisions
If your Dexcom G5 does not display a sensor glucose reading and an arrow, or
if you are getting inaccurate or inconsistent readings, use a fingerstick blood
glucose value from your blood glucose meter to make diabetes treatment
decisions.
Do Not Ignore Low/High Symptoms
Do not ignore symptoms of low or high glucose. If your glucose alerts and
readings do not match your symptoms or expectations, you should obtain a
fingerstick blood glucose value from your blood glucose meter to make diabetes
treatment decisions or seek immediate medical attention.
Who Should Not Use
The Dexcom G5 was not evaluated or approved for the following persons:
• Pregnant women
• Persons on dialysis
Do not use the Dexcom G5 Mobile CGM System in critically ill patients. It is
not known how different conditions or medications common to the critically ill
population may affect performance of the system. Sensor glucose readings may
be inaccurate in critically ill patients.
The Dexcom G5’s accuracy has not been tested in people within these groups
and the system’s glucose readings may be inaccurate.
Calibrate on Schedule
Calibrate the Dexcom G5 at least once every 12 hours. The Dexcom G5 needs to
be calibrated in order to provide accurate readings. Do not use the Dexcom G5
for diabetes treatment decisions unless you have followed the prompts from the
device and calibrated every 12 hours after the initial calibration.
Placement
Do not insert the sensor component of the Dexcom G5 in a site other than the

Dexcom G5 Mobile CGM System Getting Started Guide • 7
belly/abdomen (ages 2 years and older) or the upper buttocks (ages 2 to 17
years). The placement and insertion of the sensor component of the Dexcom G5
is not approved for other sites. If placed in other areas, the Dexcom G5 may not
function properly.
Initial Calibration: Data/Alarm/Alert
Do not expect sensor glucose readings or alarms/alerts from the Dexcom G5 until
after the 2-hour startup. The Dexcom G5 will NOT provide any sensor glucose
readings or alarms/alerts until after the 2-hour startup ends AND you complete
the startup calibration. Use fingerstick glucose values from your blood glucose
meter during the 2-hour startup.
Sensor Storage
Store the sensor at temperatures between 36°F-77°F for the length of the
sensor’s shelf life. You may store the sensor in the refrigerator if it is within this
temperature range. The sensor should not be stored in the freezer.
Storing the sensor improperly might cause the sensor glucose readings to be
inaccurate.
Smart Device Settings
Your smart device’s internal settings override any Dexcom G5 Mobile App setting.
In addition, accessory devices (like a smart watch or other wearable smart
devices) might override your smart device’s Alarm, Alert, and notification settings.
To receive Alarm or Alerts you must:
1. Make sure the notifications for the Dexcom G5 Mobile App are turned on in the
setting’s menu of your smart device.
2. Check that the Dexcom G5 Mobile App hasn’t been shut down by your smart
device.
3. Turn on Bluetooth on your smart device.
4. Turn off the Do Not Disturb feature on your smart device (if available).
5. Restart the Dexcom G5 Mobile App after your smart device is restarted.
6. Set the volume on your smart device at a level you can hear.
7. Always run the app in the background; do not close the Dexcom G5 Mobile
App.
8. Make sure accessory devices do not override your smart device settings.
If the settings on your smart device are incorrect, your Dexcom G5 may not
function properly.

8 •Dexcom G5 Mobile CGM System Getting Started Guide
The Dexcom G5 Alarm/Alert vibrations are not any different from other vibrating
apps on your smart device. Medical device apps, like the Dexcom G5 Mobile App,
do not have any special priorities over your smart device’s features. You cannot
determine if a vibration is a notification from your Dexcom G5 Mobile App or
another app. The only way to know is to look at the screen.
Missed an Alarm or Alert?
An Alarm or Alert from the Dexcom G5 Mobile App cannot be heard through your
smart device’s speakers if headphones are plugged in.
Make sure you unplug your headphones when you are done using them,
otherwise you might not hear an Alarm or Alert from the Dexcom G5.
Precautions
Sensor Package
Do not use the Dexcom G5 Sensor if its sterile package has been damaged or opened.
Using a non-sterile sensor might cause infection.
Clean and Dry Before Using
Do not open the sensor package until you have washed your hands with soap and
water, and let them dry. You may contaminate the insertion site and suffer an infection
if you have dirty hands while inserting the sensor.
Do not insert the sensor until you have cleaned the skin near the insertion site with a
topical antimicrobial solution, such as isopropyl alcohol, and allowed the skin to dry.
Inserting into unclean skin might lead to infection. Do not insert the sensor until the
cleaned area is dry so the sensor adhesive will stick better.
Reusable: Don’t Throw Away
Do not discard your transmitter. It is reusable. The same transmitter is used for each
session until you have reached the end of the transmitter’s battery life.
The following precautions may result in the consequence of missing severe
hypoglycemia (low blood glucose) or hyperglycemia (high blood glucose) or making a
treatment decision that results in injury:

Dexcom G5 Mobile CGM System Getting Started Guide • 9
Be Accurate, Be Quick
To calibrate the system, enter the exact blood glucose value displayed on your
blood glucose meter within five minutes of a carefully performed fingerstick
glucose measurement.
Do not enter the Dexcom G5’s sensor glucose readings for calibration.
Entering incorrect blood glucose values, blood glucose values obtained more
than 5 minutes before entry, or sensor glucose readings might affect sensor
performance.
Treatment Decisions
Make diabetes treatment decisions based on the combination of the sensor
glucose reading, trend arrow, and/or actionable alerts generated by the Dexcom
G5.
Expiration Date
Do not use Dexcom G5 Sensors that are beyond their expiration date. Before
inserting a sensor, confirm the expiration date that is listed on the package label
in the following format: YYYY-MM-DD.
Do not use sensors that are beyond their expiration date because the sensor
glucose readings might not be accurate.
Sensor Placement
Avoid using the same spot repeatedly for sensor insertion. Rotate your sensor
placement sites, and do not use the same site for two sensor sessions in a row.
Using the same site might cause scarring or skin irritation.
Avoid inserting the sensor in areas that are likely to be bumped, pushed, or
compressed or areas of skin with scarring, tattoos, or irritation as these are
not ideal sites to measure glucose. Insertion in these areas might affect sensor
accuracy.
Avoid injecting insulin or placing an insulin pump infusion set within three inches
of the sensor. The insulin might affect sensor performance.
Use Correct Transmitter, Receiver, and Sensor
Different generations of Dexcom continuous glucose monitoring system
transmitters and receivers are not interchangeable with each other.

10 •Dexcom G5 Mobile CGM System Getting Started Guide
The Dexcom G5’s transmitter and receiver are not compatible with the Dexcom
G4 PLATINUM CGM System’s transmitter and receiver. The Dexcom G5 will not
work if you mix the transmitter and receiver from different generations. You can
use a Dexcom G4 PLATINUM Sensor with the Dexcom G5 System. Before using
the sensor, make sure the sensor label says “Dexcom G5 Mobile/G4
PLATINUM Sensor” or “Dexcom G4 PLATINUM Sensor.”
Communication Range
Avoid separating the transmitter and receiver by more than 20 feet. The
transmission range from the transmitter to the receiver is up to 20 feet without
obstruction. Wireless communication does not work well through water so the
range is much less if you are in a pool, shower, etc.
Types of obstruction differ and have not been tested. If your transmitter and
receiver are farther than 20 feet apart or are separated by an obstruction, they
might not communicate or the communication distance may be shorter.
Setting Alarm/Alert Notifications
When using both a receiver and a smart device with your Dexcom G5, you must
set your settings separately in each. If you set up one device and then use
another, you might not get an Alarm or Alert.
Using an accessory device (like a smart watch) might override your smart device
sounds. Alarms or Alerts might vibrate or be heard on the accessory instead of
your smart device. After connecting any accessories, make sure that the smart
device settings allow you to continue receiving Alarms or Alerts on the smart
device.
Is it On?
If the receiver or smart device is turned off (Shut Down), it will not display sensor
data, information, Alarm or Alerts generated by the Dexcom G5. Make sure the
Display Devices are turned on; otherwise you won’t get sensor glucose readings
or Alarm or Alerts.
Keep Receiver Dry
Keep the USB port cover on the receiver closed whenever the USB cable is not
attached. Do not submerge the receiver in water.
If water gets into the USB port, the receiver could become damaged and stop
displaying readings or providing alerts.

Dexcom G5 Mobile CGM System Getting Started Guide • 11
No Alternative Site Testing
Do not use alternative blood glucose site testing (blood from your palm or
forearm, etc.) for calibration. Alternative site blood glucose values may be
different than those taken from a fingerstick blood glucose value and may not
represent the timeliest blood glucose value. Use a blood glucose value taken only
from a fingerstick for calibration. Using alternative site blood glucose values for
calibration might affect the Dexcom G5’s accuracy.
When Not To Calibrate
Do not calibrate if your blood glucose is changing at a significant rate, typically
more than 2 mg/dL per minute. Do not calibrate when your receiver screen is
showing the rising or falling single arrow or double arrow, which indicates that
your blood glucose is rapidly rising or falling. Calibrating during rapid rise or fall
of blood glucose may affect sensor accuracy.
Don’t Share Your Transmitter
Do not share your transmitter with another person or use a transmitter from
another person. The Dexcom G5 is a prescription-only medical device and is
meant, or indicated, for individual use only.
The transmitter is tied to the sensor glucose readings. If the transmitter is used
by more than one person, the glucose readings, alerts, and reports may be
wrong.
Caution
U.S. law restricts the sale of the Dexcom G5 to sale by or on order of a physician.

12 •Dexcom G5 Mobile CGM System Getting Started Guide
Section 3: Risks and Benefits
3.1 Risks
There are some risks with using real-time CGM.
Not Receiving Alarm/Alerts
If you aren’t getting your CGM Alarm/Alerts, you run the risk of not knowing you are
having a severe low or high glucose.
Some hardware issues preventing Alarm/Alerts:
• Alert function is turned off
• Transmitter and display device is out of range
• Receiver or smart device isn’t showing sensor glucose readings. For
example, when there are data gaps due to being out of range or “???”
• Receiver or smart device battery is dead
• Unable to hear Alarm/Alerts or feel vibration
• App not running in the background
• On Apple devices, Signal Loss Alert won’t be heard if device is silenced or in
Do Not Disturb
Using CGM for Treatment Decisions
If you are taking acetaminophen, you sensor glucose readings may be falsely high
causing you to potentially miss a low glucose or treat a high glucose with insulin. Do
not make any treatment decision based on your CGM when acetaminophen is active in
your body.
In order to use CGM for your treatment decisions, you must calibrate a minimum of
once every 12 hours to help keep your CGM system accurate. If you do not calibrate at
this minimum frequency and make treatment decisions based on your CGM, you could
not be getting the most accurate information and miss a high or low glucose.
In order to use CGM for your treatment decisions, you must have:
1. Sensor glucose reading
2. Trend Arrow
If you have symptoms of low or high glucose, but your CGM is not showing high or low
glucose sensor readings, take a fingerstick blood glucose measurement with your BG
meter. If you are a caregiver of someone using the G5 Mobile, watch how they act. If
their symptoms don’t match the CGM, take a fingerstick BG measurement.
Your BG meter is your back-up when/if your CGM is not showing a sensor glucose
reading or your symptoms do not match your sensor readings. Remember to wash your
hands before taking a fingerstick.

Dexcom G5 Mobile CGM System Getting Started Guide • 13
Sensor Glucose Reading Different from Your
Expectations or Symptoms
The sensor glucose reading can be different than your expectations and symptoms. In
this case, wash your hands and take a fingerstick blood glucose measurement with
your BG meter to confirm your expectations and symptoms. If your sensor readings and
BG meter values are different, you can calibrate your CGM system. Wash and dry your
hands, repeat the BG measurement and if still different, recalibrate.
If you’re not receiving an Alarm/Alert, and not taking fingerstick BG measurements, you
may be unaware of low or high glucose levels.
Sensor Insertion Risks
Inserting the sensor and wearing the adhesive patch might cause infection, bleeding,
pain, or skin irritations (e.g., redness, swelling, bruising, itching, scarring or skin
discoloration). The chance of this happening is low.
The Dexcom G5 uses the same sensor as the previous CGM system—the Dexcom G4
PLATINUM. The Dexcom G4 PLATINUM System clinical studies and complaint data
showed slight redness and swelling occurring only in a small percentage of Dexcom’s
total patient population.
During Dexcom’s G4 PLATINUM System’s clinical study, no sensor wires broke however
there is a remote chance sensor fragments could remain under your skin if the sensor
breaks during normal wear. Sterile broken sensor wires don’t pose a significant medical risk.
If a sensor wire breaks off or detaches and remains under your skin, contact your
healthcare professional and call Dexcom’s Technical Support toll free, 24/7, at
1.877.339.2664 or toll at 1.858.200.0200 within 24 hours.
3.2 Benefits
Daily habits impact your glucose levels. With the Dexcom G5, you can track how your
exercise, carbs, stress levels, medication, or illness, influence your glucose levels.
Knowing Your Trends
Providing sensor glucose readings every five minutes, for up to seven days, the
Dexcom G5 helps you detect trends and patterns. Trend information as well as the
trend arrow reveals where your glucose is now, where your glucose is heading, and
how fast it’s changing. This provides you with a more complete picture of your glucose.
Making Treatment Decisions Based on Your CGM
With Dexcom G5, you can now use the sensor glucose readings to make your diabetes
treatment decision (like how much insulin to take, when to treat a low glucose, etc.)
when you have the key pieces of CGM information – trend arrow and sensor glucose

14 •Dexcom G5 Mobile CGM System Getting Started Guide
reading. If you are using the G5 Mobile to make treatment decisions, make sure your
Alerts are on. Talk to your healthcare professional to determine your best Alert levels.
Helps in Your Diabetes Management
The Alarm/Alerts features keep you aware of your glucose levels. Alerts notify you
when your glucose goes outside your target range or is rapidly falling or rising,
letting you to take action before you get too low or too high. The Urgent Low Alarm
lets you know when you are dangerously or urgently low, going below 55 mg/dL. By
taking corrective measures, you lessen the time spent in your low/high range, while
increasing time in your targeted range (Battelino, 2011). If you are using the G5 Mobile
to make treatment decisions, make sure your Alerts are on.
Real-time CGM can help improve your A1C as well as improve the quality of your
glucose control. If your A1C is at or below 7%, using a CGM such as the Dexcom G5,
helps reduce hypoglycemia.
Lowering your A1C, increasing your time in your target range while decreasing time
in low/high BG range is believed to reduce your risk of diabetes related complications
(Ohkubo, 1995).
Some people perceive an increase in their quality of life and peace of mind when using
real-time CGM.
References:
Battelino, T., Phillip, M., Bratina, N., Nimri, R., Oskarsson, P., & Bolinder, J. (2011). Effect of
Continuous Glucose Monitoring on Hypoglycemia in Type 1 Diabetes. Diabetes Care , 34 (4),
795-800.
The Diabetes Control and Complications Trial Research Group. The Effect of Intensive
Treatment of Diabetes on the Development and Progression of Long-Term Complications in
Insulin-Dependent Diabetes Mellitus. The New England Journal of Medicine, Vol. 329, No.
14. (September 1993), pp. 977-986.
Garg, S., Zisser, H., Schwartz, S., Bailey, T., Kaplan, R., Ellis, S., & Jovanovic, L. (2005).
Improvement in Glycemic Excursions With a Transcutaneous, Real-Time Continuous Glucose
Sensor: A randomized controlled trial. Diabetes Care , 29 (1), 44-50.
Sustained Benefit of Continuous Glucose Monitoring on A1C, Glucose Profiles, and
Hypoglycemia in Adults With Type 1 Diabetes. Diabetes Care, 32 (11), 2047-2049.
Juvenile Diabetes Research Foundation Continuous Glucose Monitoring Study Group (2010).
Quality-of-Life Measures in Children and Adults with Type 1 Diabetes. Diabetes Care , 33
(10), 2175-2177.
Ohkubo, Y., Kishikawa, H., Araki, E., Miyata, T., Isami, S., Motoyoshi, S., & Shichiri, M. (1995).
Intensive Insulin Therapy Prevents the Progression of Diabetic Microvascular Complications
in Japanese Patients with Non-insulin-dependent Diabetes Mellitus: A Randomized
Prospective 6-year Study. Diabetes Research and Clinical Practice, 28 (2), 103-117.

Dexcom G5 Mobile CGM System Getting Started Guide • 15
Section 4: System Overview
4.1 Components
Your Dexcom G5 is made up of the following:
The Dexcom G5 Mobile App on your smart device* and/
or your receiver can be used as your display device.
• Displays your glucose readings
• Allows you to set and receive Alarm/Alerts
• Your display device and transmitter must be kept
within 20 feet of each other
Display Device(s)
• Placed into the sensor pod
• Wirelessly sends glucose information to either your
Dexcom G5 Mobile App, your receiver, or both
• Reusable during three month battery life
Transmitter
• The sensor is inserted using the applicator
• Small sensor wire measures glucose levels just
below the skin
• Worn for up to seven days
• The sensor and applicator are disposable after use
Sensor and Applicator
Images are representational. Your system may vary.
*For a list of compatible devices see: dexcom.com/compatibility

16 •Dexcom G5 Mobile CGM System Getting Started Guide
4.2 Choose Display Device
To set up your Dexcom G5, first choose the display device(s) you want to receive your
CGM data and alerts. You have three choices.
Smart Device Only (For Setup see Section 5)
Your transmitter sends glucose information directly to your smart device using
Bluetooth
® wireless technology.
Bluetooth on your smart device must be ON in order to
receive CGM data and alerts.
Receiver Only (For Setup see Section 6)
Your transmitter sends glucose information directly to your receiver using Bluetooth .
Things to consider if choosing your receiver only:
• Your receiver is a dedicated medical device
• Use when you cannot take your phone
• Battery lasts at least three days
• You will not have access to Dexcom Share*
* Dexcom Share allows you to share your glucose information with Followers. For more
information on Dexcom Share see your user guide.
Smart Device and Receiver
(For Setup see Section 5 and 6)
Your transmitter sends glucose information directly to your app and/or your receiver, at
the same time, using Bluetooth .
You can choose to use both devices at once or switch between devices.
Things to consider if choosing both devices:
• Use your app during daily activities where you already take your smart device
• Use your receiver during activities where your smart device may not be allowed
(work or school)
• If you carry both devices, you will receive alerts and must acknowledge alerts on
both devices

App Setup
Dexcom G5 Mobile CGM System Getting Started Guide •17
Install the Dexcom G5 Mobile App
from your app store.
Log in to the app (with your existing
Dexcom account) or sign up for a new
account.
1
2
Section 5: App Setup
5.1 Install App
Once you log in, the app guides you through the setup process.
This takes about 20 minutes and includes:
• Setting your high and low alerts
• Adjusting your device settings
• Entering your transmitter serial number
• Inserting your sensor and attaching your transmitter
• Pairing your transmitter with your app
• Starting your 2-hour sensor warmup

App Setup
18 •Dexcom G5 Mobile CGM System Getting Started Guide
At the end of the 2-hour warmup, you must enter two separate BG meter values before
glucose readings begin.
5.2 Enter Initial BG Meter Values
5
Enter the exact value from your BG meter.
Tap SAVE.
2
Wash hands with soap and water, never gel
cleaners. Dry your hands.
Washing and drying your hands before taking
a BG value helps ensure accuracy.
3
Take a fingerstick BG measurement using
your BG meter.
Use fingertips only.
Your app alerts you when you need to enter
your two BG meter values.
Go to your app to enter values.
1
4
Tap the circle to enter the first of two BG
meter values within five minutes of obtaining
the value.
6
Repeat steps above to enter the final BG
meter value.
Entering two separate BG meter values will
ensure an accurate reading.