Natech Nealact User manual

Nealact
Lactate meter
User Manual
NEA_LEC_EN_ind01_06/01/2021

Dear Nealact User:
Thank you for purchasing the Nealact Lactate Meter Monitoring
System. This manual provides important information to help you to
use the system properly. Before using this product, please read the
following contents thoroughly and carefully.
If you have other questions regarding this product, please contact the
local customer service or place of purchase.
Intended Use
This system is intended for use outside the body (in vitro diagnostic
use) to quantitatively measure the lactate levels in whole blood. It is
for home use or for healthcare professional use. It should not be used
for diagnosis or screening of diseases.
The lactate test strip uses fresh capillary whole blood samples from
the fingertips, and from venous whole blood. Professionals may use
the test strips to test capillary and venous blood sample immediately;
home use is limited to capillary whole blood testing immediately.
Test Principle
Your system measures the amount of lactate in whole blood. The
lactate testing is based on the measurement of electrical current
generated by the reaction of lactate with the reagent of the strip. The
meter measures the current, calculates lactate level, and displays the
result. The strength of the current produced by the reaction depends
on the amount of lactate in the blood sample.

IMPORTANT SAFETY PRECAUTIONS
READ BEFORE USE
1. Use this device ONLY for the intended use described in this manual.
2. Do NOT use accessories which are not specified by the manufacturer.
3. Do NOT use the device if it is not working properly or if it is damaged.
4. The lactate test strip has not been tested in NICU (Neonatal Intensive
Care Unit)
5. This device does NOT serve as a cure for any symptoms or diseases.
The data measured is for reference only. Always consult your doctor
to have the results interpreted.
6. Before using this device to test lactate, read all instructions thoroughly
and practice the test. Carry out all the quality control checks as
directed.
7. Keep the device and testing equipment away from young children.
Small items such as the battery cover, batteries, test strips, lancets
and vial caps are choking hazards.
8. Use of this instrument in a dry environment, especially if synthetic
materials are present (synthetic clothing, and carpets etc.) may cause
damaging static discharges that may cause erroneous results.
9. Do NOT use this instrument in close proximity to sources of strong
electromagnetic radiation, as these may interfere with the accurate
operation.
10. Proper maintenance and periodically control solution test are
essential to the longevity of your device. If you are concerned about
your accuracy of measurement, please contact the local customer
service or place of purchase for help.
KEEP THESE INSTRUCTIONS IN A SAFE PLACE

TABLE OF CONTENTS
BEFORE YOU BEGIN...............................................................................................1
Important Information.................................................................. 1
Meter Overview...........................................................................2
Display Screen............................................................................3
Nealact Lactate Test Strip ...........................................................4
SETTING THE METER .............................................................................................5
THE MEASURING MODE.........................................................................................7
Lactate Testing............................................................................7
QUALITY CONTROL TESTING ...............................................................................8
When Should the Lactate Control Solution Test Be Performed? .. 8
Performing a Control Solution Test..............................................8
TESTING WITH BLOOD SAMPLE.........................................................................10
Preparing the Lancing Device for Blood Testing ........................ 10
Preparing the Puncture Site ...................................................... 10
Performing a Blood Test.............................................................11
METER MEMORY ...................................................................................................13
Reviewing Test Results ............................................................. 13
BLUETOOTH PAIRING...........................................................................................14
MAINTENANCE ......................................................................................................16
Battery ......................................................................................16
Replacing the Battery................................................................ 16
Caring for Your Meter................................................................ 17
Caring for Your Test Strips......................................................... 17
Important Control Solution Information......................................18
MEASUREMENT RESULT READINGS .................................................................19
Lactate Testing.......................................................................... 19
Reference Values...................................................................... 19
SYSTEM TROUBLESHOOTING ............................................................................20
Error Messages.........................................................................20
Troubleshooting ........................................................................ 21
SYMBOL INFORMATION .......................................................................................23
SPECIFICATIONS ...................................................................................................24
PURCHASE INFORMATION ..................................................................................25
CONTACT INFORMATION .....................................................................................26

1
BEFORE YOU BEGIN
Important Information
•Severe dehydration and excessive water loss may cause
readings which are lower than actual values. If you believe you
are suffering from severe dehydration, consult a healthcare
professional immediately.
•If your lactate is lower or higher than usual, and you do not have
any symptoms of illness, first repeat the test. If you have
symptoms or continue to get results which are higher or lower
than usual, follow the treatment advice of your healthcare
professional.
•Use only fresh whole blood samples to test your lactate. Using
other substances will lead to incorrect results.
•If you are experiencing symptoms that are inconsistent with your
test results and you have followed all the instructions given in
this owner’s manual, contact your healthcare professional
•We do not recommend using this product on severely
hypotensive individuals or patients in shock. Please consult the
healthcare professional before use.
•The measurement unit used for indicating the concentration of
blood or plasma lactate is molarity (mmol/L).

2
Meter Overview
Test Strip Ejector
Eject the used strip by sliding up this button.
Bluetooth Indication Light
Display Screen
Left Scroll Button ( )
Adjust value decrement. Scroll the values in the memory.
M Button (M)
Enter the meter memory.
Right Scroll Button ( )
Enter Bluetooth function and adjust value increment. Scroll the
values in the memory.
Strip Indication Light
The indicator lights up in blue while the strip is inserted
Test Strip Slot
Insert test strip here to turn the meter on for testing.
Battery Compartment
1
2
3
4
5
6
7
9
8

3
Display Screen
Test Result
Measuring Mode
Gen – Sample test
Auto QC Mode
QC – Control solution test
Memory Mode
Date / Time
Error Message
Alarm Symbol
Measurement Unit
Low Battery Symbol
Lactate Symbol
Test Strip Symbol
Sample Drop Symbol
Code of strip
1
2
3
4
5
6
7
8
9
10
11
12
13

4
Nealact Lactate Test Strip
ATTENTION:
The front side of test strip should face up when inserting test
strip.
Test results might be wrong if the contact bar is not fully inserted into
the test slot.
NOTE:
The Nealact meter should only be used with Nealact Lactate test
strips. Using other test strips with this meter can produce inaccurate
results.
Absorbent Hole
Test Strip Handle
Confirmation Window
Contact Bars
1
2
3
4

5
SETTING THE METER
Before using your meter for the first time or if you change the meter
battery, you should check and update these settings.
Entering the Setting Mode (a)
Start with the meter off (no test strip inserted). Press and hold
and at the same time.
1. Setting the date
The sequence of the date setting is: YEAR → MONTH → DAY.
With the YEAR / MONTH / DAY flashing in sequence, press
or to select the correct number. Press M.
2. Setting the time format
Press or to select the desired time format (12h or 24h).
Press M.
3. Setting the time
With the HOUR / MINUTE flashing in sequence, press or
to select the correct number. Press M.
4. Setting the buzzer
With the buzzer displays, press or to switch between
“On” and “Off”. Press M.
5. Deleting the memory
With “dEL” and “ ” on the display, press to select “no” to
keep the results in memory then press Mto skip. To delete all
the results, press and select “yes”to delete all the memory
records.

6
6. Setting the reminder alarm
Your meter has four reminder alarms. The meter will display “On”or
“OFF” and “ ”. If you don’t want to set an alarm, press Mto skip
this step. Or press or to select “On”, then press M.
With the hour/minute flashing in sequence, press or to select
the correct hour/minute. Press M and go to the next alarm setting.
NOTICE:
When the alarm beeps, press to switch it off. Otherwise, it will
beep for 2 minutes then switch off.
7. Setting the Bluetooth function
With “BLE”on the display, press or to select “On”or “OFF”.
Press M.
NOTICE:
This function is referring to the Bluetooth data transmission. If “On” is
selected, your result will be transmitted automatically right after the
test.
Congratulations! You have completed all settings!
NOTE:
⚫These parameters can ONLY be changed in the setting mode.
⚫If the meter is idle for 1 minute during the setting mode, it will
switch off automatically.

7
THE MEASURING MODE
Lactate Testing
The meter provides you with one mode for measuring, “Gen”.
You can start with the meter switched off. Insert a test strip to turn on
the meter. The screen will display “”,a flashing “ ”and “LAC”.

8
QUALITY CONTROL TESTING
When Should the Lactate Control Solution Test Be
Performed?
⚫if it is mandatory following the local regulations in your country,
⚫if you suspect the meter or test strips are not working properly,
⚫if your test results are not consistent with how you feel, or if you
think the results are not accurate,
⚫to practice the testing process, or
⚫if you have dropped or think you may have damaged the meter.
Test strips (c), control solutions (d), lancing device (e) or sterile
lancets (f) are not provided with the meter and can be purchased
separately. Please make sure you have those items needed for a test
beforehand.
Performing a Control Solution Test
To perform a control solution test, you will need: (b), (c) and (d).
1. Insert the test strip to turn on the meter
Insert the test strip into the meter. Wait for the meter to display
“ ” and a flashing “ ” .
2. Apply control solution (g)
Shake the control solution vial thoroughly before use. Squeeze
out the first drop and wipe it off, then squeeze out another drop
and place it on the tip of the vial cap. Hold the meter to move the
absorbent hole of the test strip to touch the drop. Once the
confirmation windowfills completely, the meter will begin counting
down.

9
NOTE:
⚫For the control solution test, your device will tag this measurement
as QC test automatically.
⚫To avoid contaminating the control solution, do not directly
apply control solution onto a strip.
3. Read and compare the result
After counting down to 0, the control solution test result will appear
on the display. Compare this result with the range printed on the
test strip vial and it should fall within this range. If not, please read
the instructions again and repeat the control solution test.
With “QC” displayed, the meter will store your test result in
memory under “QC”.
NOTE:
⚫The control solution range printed on the test strip vial is for control
solution use only. It is not a recommended range for your blood
test level.
⚫See the MAINTENANCE section for important information about
your control solutions.

10
TESTING WITH BLOOD SAMPLE
Warning:
To reduce the chance of infection:
⚫Never share a lancet or the lancing device.
⚫Always use a new, sterile lancet. Lancets are for single use only.
⚫Avoid getting hand lotion, oils, dirt, or debris in or on the lancets
and the lancing device.
Preparing the Lancing Device for Blood Testing
Please follow the instructions in the lancing device insert for collecting
a blood sample.
Preparing the Puncture Site
Stimulating blood perfusion by rubbing the puncture site before blood
extraction has a significant influence on the test value obtained.
Blood from a site that has not been rubbed exhibits a measurably
different lactate concentration than blood from the finger. When the
puncture site was rubbed prior to blood extraction, the difference was
significantly reduced.
Please follow the suggestions below before obtaining a drop of
blood:
⚫Wash and dry your hands before starting.
⚫Select the puncture site.
⚫Rub the puncture site for about 20 seconds before penetration.
⚫Clean the puncture site using cotton moistened with 70% alcohol
and let it air dry.
⚫Fingertip testing (h)
Press the lancing device’s tip firmly against the lower side of your
fingertip. Press the release button to prick your finger, then a click
indicates that the puncture is complete.

11
NOTE:
Choose a different spot each time you test. Repeated punctures at
the same spot may cause soreness and calluses.
Performing a Blood Test
To perform a blood test, you will need: (b), (c), (e) and (f).
1. Insert the test strip to turn on the meter
Wait for the meter to display the “ ”, “ ”, and “LAC”.
2. Obtaining a blood sample (i)
Use the pre-set lancing device to puncture the desired site. The
size of the drop should be at least as big as․(actual size) which
is 0.8 microliter (μL) of volume for the lactate test.
Gently squeeze the punctured area to obtain another drop of
blood. Be careful NOT to smear the blood sample.
3. Apply the sample (j)
Gently apply the drop of blood to the absorbent hole of the test
strip at a tilted angle. Confirmation window should be completely
filled if enough blood sample has been applied. Do NOT remove
your finger until you hear a beep sound.
NOTE:
⚫For a lactate test, make sure to perform a test immediately after
drawing the sample.
⚫Do not press the punctured site against the test strip or try to
smear the blood.
⚫If you do not apply a blood sample to the test strip within 1 minute,
the meter will automatically turn off. You must remove and reinsert
the test strip to start a new test.

12
⚫The confirmation window should be filled with blood before the
meter begins to count down. NEVER try to add more blood to the
test strip after the drop of blood has moved away. Discard the
used test strip and retest with a new one.
⚫If you have trouble filling the confirmation window, please contact
your health care professional or the local customer service for
assistance.
4. Read Your Result
The result of your test will appear after the meter counts down to
0. The result will be stored in the memory automatically.
5. Eject the used test strip (k)
Eject the test strip by pushing the eject button on the side. Use a
sharp bin to dispose of used test strips. The meter will switch itself
off automatically.
Always follow the instructions in the lancing device insert when
removing the lancet.
WARNING:
The used lancet and test strip may be biohazardous. Please discard
them carefully according to your local regulations.

13
METER MEMORY
The meter stores the 1000 most recent test results along with
respective dates and times in its memory. To enter the meter memory,
start with the meter switched off.
Reviewing Test Results
1. Press and release M.
“ ” will appear on the display and the first reading you see is the
last testing result along with date or time and the measuring mode.
2. Press or to scroll through all the test
results stored in the meter each time you press.
Press to scroll down to view the old test result
and press to scroll up to see the new one.
Keep pressing to scroll up to the first reading,
you will see “toP” on the meter display; keep
pressing to scroll down to the last reading, you
will see “End” on the meter display. Press and hold
M to switch off the meter.
3. Exit the meter memory.
Keep pressing the M and the meter will turn off after
displaying the last test result.
NOTE:
⚫Any time you wish to exit the memory, keep pressing M for 3
seconds or leave it without any action for 1 minute. The meter will
switch off automatically.

14
BLUETOOTH PAIRING
Data Transmission via Bluetooth
You can transmit your data from the meter to your device via
Bluetooth. The ProCheck app is designed to assist you easily
monitoring your lactate levels.
How to Install and Update the ProCheck App
You must connect to the internet to download the app. The App Store
or Google Play can be accessed by tapping the App Store or Play
Store icon on your iOS or Android devices.
It is simple and intuitive to use, for better understanding of your
current condition and to achieve better diabetes control.
System Requirement
For the requirement of OS version, please find on App Store or
Google Play when you download the app. Please contact your local
customer service or place of purchase for assistance. Please note
that you must complete the pairing between meter and Bluetooth
receiver before transmitting data.
Pairing with your mobile device
1. Turn on the Bluetooth function on your mobile device.
2. Follow the instructions of the ProCheck app to pair the device. (Ex.
Search to find the meter and then add it into the app.)
3. After successfully pairing the app with the device, the Bluetooth
function of meter shall be on before transmitting data to the
ProCheck app.

15
Bluetooth Indicator on the Meter:
BLUETOOTH
INDICATOR
STATUS
Flashing Blue
The Bluetooth function is on and
waiting for connection.
Solid Blue
The Bluetooth connection is
established.
WARNING:
⚫While the meter is in transmission mode, it will be unable to perform
a test.
⚫Make sure your device supports Bluetooth Smart Technology. Also
make sure the Bluetooth setting on your device is turned on and
the meter is within the receiving range before transmitting the data.
Please find OS version requirement on App Store or Google Play
when you download the app.
⚫The Bluetooth functionality is implemented in different ways by the
various mobile device manufacturers; the compatibility issue
between your mobile device and the meter maybe occur.