Contour NEXT EZ, User Manual

Electromagnetic Compatibility (EMC):  The 

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 EZ meter complies with the electromagnetic 

requirement specifi ed in ISO 15197:2013. Electromagnetic 

emissions are low and unlikely to interfere with other nearby 

electronic equipment, nor are emissions from nearby electronic 

equipment likely to interfere with the C

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 EZ meter. 

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 EZ meter meets the requirements of IEC 

61000-4-2 for immunity to electrostatic discharge. Avoid use 

of electronic devices in very dry environments, especially if 

synthetic materials are present. The C

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 EZ meter 

meets the requirements of IEC 61326-1 for radio frequency 

interference. To avoid radio frequency interference, do not 

use the C

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 EZ meter near electrical or electronic 

equipment that are sources of electromagnetic radiation, as 

these may interfere with the proper operation of the meter. 
Principles of the Procedure:  The C

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 EZ blood 

glucose test is based on measurement of electrical current 

caused by the reaction of the glucose with the reagents on the 

electrode of the strip. The blood sample is drawn into the tip of 

the test strip through capillary action. Glucose in the sample 

reacts with FAD glucose dehydrogenase (FAD-GDH) and the 

mediator. Electrons are generated, producing a current that is 

proportional to the glucose in the sample. After the reaction 

time, the glucose concentration in the sample is displayed. No 

calculation is required. 
Comparison Options:  The C

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 EZ system 

is designed for use with capillary whole blood. Capillary 

samples should be applied directly to the C

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test strip. Comparison to a laboratory method must be done 

simultaneously with aliquots of the same sample.  
NOTE: Glucose concentrations drop rapidly due to 

glycolysis (approximately 5% – 7% per hour).

6

 System Specifi cations 

Test Sample:  Capillary whole blood 
Test Result:  Glucose measurements are reported as plasma 

equivalents. 
Sample Volume:  0.6 µL 
Measuring Range:  20 mg/dL–600 mg/dL 
Results:  5-second countdown 
Memory Feature:  Stores most recent 480 test results 
Battery Type:  Two 3-volt lithium batteries, 225 mAh capacity 

(DL2032 or CR2032) 
Battery Life:  Approximately 1000 tests (1 yr. average use) 
Meter Operating Temperature Range:  41°F–113°F 
Control Solution Operating Temperature Range: 

59°F–95°F 
 Meter Operating Humidity Range:  10% RH–93% RH
Dimensions:  3.03" (H) x 2.24" (W) x 0.74" (T) 

77 mm (H) x 57 mm (W) x 19 mm (T)  
Weight:  1.7 oz. (47.5 grams) 
Sound:  A beep sounds when the meter is turned on, a test strip 

is inserted, when a test strip is fi lled with blood, or when a test 

result appears on the display. Two beeps sound when the meter 

turns off  or to indicate an error. You will hear twenty beeps when 

a programmed reminder sounds.  

Technical Information

 The C

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 EZ blood glucose monitoring system was 

tested by 115 lay users using capillary blood samples and three 

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 test strip lots. The results were compared to the 

YSI Glucose Analyzer laboratory reference method, traceable to 

the CDC hexokinase method. The tables below show how well 

the two methods compared.  
  Table 1 – System accuracy results for glucose 

concentration < 75 mg/dL 

Diff erence range 

in values between 

YSI laboratory 

reference method 

and C

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 EZ 

meter

Within 

± 5 

mg/dL

Within 

± 10 

mg/dL

Within 

± 15 

mg/dL*

Number (and percent) 

of samples within 

specifi ed range

6 of 7 

(85.7%)

7 of 7 

(100.0%)

7 of 7 

(100.0%)

After performing a test

To Mark 

Results

You Will 

See

To Set

You Will See

What It Means

Pre-Meal

Press 

or 

(Flashing)

Press 

M

Result is 

marked as a 

pre-meal test. 

You can now 

set a reminder.

Reminder

Press 

or 

(Flashing)

Press 

M

Reminder is 

set to go off  in 

the amount of 

time you have 

set 

(1.0 – 2.5 

hours) to 

remind you to 

run a post-

meal test.

Post-

Meal

Press 

or 

(Flashing)

Press 

M

Result is 

marked as 

a post-meal 

test.*

Logbook

Press 

or 

(Flashing)

Press 

M

Result is 

marked in 

memory as 

unique. You 

should note 

this in your 

logbook.

*Post-meal glucose measurements should be made 1–2 hours 

after the beginning of the meal.

4

Viewing Advanced Mode Results

In Advanced Mode (L-2), you have all of the options described in 

Basic Mode plus additional items available. 

Press M

 to turn your meter on. Briefl y 

press M again to view the 14 day 

average including the number of results 

used to obtain the average.

Press   to review previous results.
Results will be shown starting with the 

most recent. Each result will show the 

date and time the test was taken.

You can press   or   to scroll forward or backward through the 

results. 

When 

 appears on the display, you have viewed all of the 

results in the memory.

NOTES: 
• 

Averages include the specifi ed time period plus the 

current day. 

•  The meter will hold 480 results in the memory. When 

the maximum is reached, the oldest test result will be 

removed as a new test is completed and saved to the 

memory.

• 

Press M to turn the meter off , or it will automatically turn 

off  after 3 minutes.

• 

represents the number of test results.

Transferring Results to a Computer

You can transfer test results from the C

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 EZ meter 

to a computer, where they can be summarized in a report 

with graphs and tables. To make use of this feature, you need 

G

LUCOFACTS®

D

ELUXE

 software and a data cable.

For a free download of the software go to 

www.glucofacts.ascensia.com or contact Customer Service. 

See Contact Information. May not be available in all countries.

IMPORTANT: The C

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 EZ meter has 

not been tested for use with any software other than 

G

LUCOFACTS

 D

ELUXE

 software. Ascensia Diabetes Care is not 

responsible for any erroneous results from the use of other 

software.

Viewing Basic Mode Results 

Press M to turn your meter on. Press M again to view the 

memory. 

The 14 day average will appear in the 

center of the display with the number of 

results shown at the top of the display. 

Control results are not included in this 

14 day average.

Press   to view the 7 day high and 

low summary. 
At the top of the display you will see the 

number of HI results (above 180 mg/dL) 

and LO results (below 72 mg/dL) during 

the preceding 7 day period and the total 

number of results during that period.

Press   twice to review previous 

results.
Results will be shown starting with the 

most recent. Each result will show the 

date and time the test was taken.
You can press   or   to scroll forward or 

backward through the results. 

When 

 appears on the display, you 

have viewed all of the results in the 

memory.

Viewing Advanced Mode Averages

Press M to turn your meter on. Press M again to view the 

14 day average including the number of results used to 

obtain the average.

Press   to view the 7 day high and 

low summary. 
At the top of the display you will see 

the number of HI and LO results. In the 

center of the display is the total number 

of results.

Press   to view the 7 day average. 
You will see the average in the center 

of the display and the number of results 

along the top. 

Press   to view the 30 day average. 
This will display the average in the center 

and the number of readings along the 

top.

Press again to view the 30 day 

average of results marked with a 

pre-meal marker.

Press again to view the 30 day 

average of results marked with a 

post-meal marker.

Press again and you will see 

.

Press M

 to turn the meter off , or it will 

automatically turn off  after 3 minutes.

       TECHNICAL, SERVICE & CARE 

Error Codes and Symbols

What You See What It Means What You Should Do

(will remain on 

the display)

Low batteries.

Replace the batteries 

as soon as possible.

(will fl ash for 

10 seconds 

and then the 

meter will 

turn off )

Dead batteries.

Replace the batteries.

The meter is 

ready to test.

Proceed with the 

testing of your blood.

Not enough 

blood sample.

Add more blood within 

20 seconds.

E1

Temperature out 

of range.

Move to an area that 

is within the operating 

range for the meter: 

41° – 113°F. Let the 

meter adjust to 

this temperature for 

20 minutes before 

performing a test.

4 

What You See What It Means What You Should Do

E7

Incorrect test 

strip.

Remove the test strip 

and retest using a new 

test strip. Make certain 

that you are using a 

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 test 

strip.

E10

Invalid date or 

time.

This error occurs only 

in Communication 

mode. See Setting the 

Time, Date and Sound 

(in section 3, Setup and 

Use) to reset the date 

or time. If you continue 

to see this error, please 

contact Customer 

Service. See Contact 

Information.

E11

Abnormal result.

Remove the test strip 

and retest using a 

new test strip. Be 

sure you wash and 

dry your hands well 

and carefully follow 

instructions in this 

user guide. Only 

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 test 

strips should be used.

Changing the Batteries 

Batteries should be replaced when the 

meter continually displays 

 or the 

meter briefl y shows 

 and then turns 

off  

(see Error Codes and Symbols in 

section 4, Technical, Service & Care).

1. 

Turn off  your meter before changing 

your batteries. 

2. 

Press fi rmly on the battery cover and 

slide in the direction of the arrow. 

NOTE: If you put the new batteries in the meter within 

5 minutes of taking the old ones out, all your settings and 

results will be saved. If you take more than 5 minutes, you 

will need to reset the date and time although your other 

settings and results will be saved.

3. Remove the old batteries by pressing 

the top of the battery which will raise 

the bottom of the battery up. 

4. Place new batteries under the prongs 

and into the battery compartment 

with the “+” side up. [Use two 3-volt 

(DL2032 or CR2032) lithium batteries.] 

5. Slide the battery cover back into place, 

lining up with the open slots, and close 

fi rmly.

Ascensia Diabetes Care off ers the Free Batteries for Life 

Program. When your batteries are low, please contact 

Customer Service. See Contact Information.

 WARNING 

Keep batteries away from children. Lithium batteries 

are poisonous. If swallowed, immediately contact your 

doctor or poison control center. Discard batteries 

according to your local environmental regulations.

 Symptoms of High or Low Blood Glucose 

 You can better understand your test results by being aware of 

the symptoms of high or low blood glucose.
According to the American Diabetes Association, some of the 

most common symptoms are:

5 

 Low blood glucose (Hypoglycemia):   

•   shakiness 

•   sweating 

•   fast  heartbeat 

•   blurred  vision 

•   confusion 

•   passing  out 

•   irritability 

•   seizure 

•   extreme  hunger 

•   dizziness 

 High blood glucose (Hyperglycemia): 

•   frequent  urination 

•   excessive  thirst 

•   blurred  vision 

•   increased  fatigue 

•   hunger 

 Ketones  (Ketoacidosis): 

•   shortness of breath 

•   nausea or vomiting 

•   very dry mouth 

   For additional information and a complete list of symptoms, 

contact your health care professional or refer to the website of 

the American Diabetes Association: www.diabetes.org. 

 Information For Safety 

If you are experiencing any of these symptoms, 

test your blood glucose. If your test result is under 

50 mg/dL or above 250 mg/dL, contact your 

health care professional immediately. 

What You See What It Means What You Should Do

Control test 

result is out 

of range (too 

high or too 

low).

Test strip or 

control solution 

is past the 

expiration date 

or is past the 

discard date.

Check all expiration 

dates and discard 

dates. Do not use 

expired testing 

materials.

Test strip is 

deteriorated 

due to heat or 

exposure to 

moisture.

Run another control 

test with a new test strip 

and control solution.

Control solution 

is not at room 

temperature 

or may not be 

mixed well.

Shake the control 

solution bottle well, 

about 15 times before 

every use.

Incorrect control 

solution was 

used.

Make sure you are 

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control solution.

Meter could be 

damaged.

If result is still out 

of range, contact 

Customer Service. See 

Contact Information.

Caring for Your Meter

•  Store meter in the carrying case provided whenever possible.

•  Wash and dry hands well before handling to keep 

the meter and test strips free of water, oils and other 

contaminants.

•  Handle the meter carefully to avoid damaging the electronics 

or causing other malfunctions.

•  Avoid exposing meter and test strips to excessive humidity, 

heat, cold, dust, or dirt.

•  Clean and disinfect your meter as recommended in Cleaning 

and Disinfection (in section 2, Testing).

What You See What It Means What You Should Do

Some display 

segments do 

not appear 

when the 

meter initially 

turns on.

Possible meter 

electronics 

failure.

Compare meter display 

with the illustration in 

Your Meter Display 

(in section 1, Getting 

Started). If the display 

is not correct, contact 

Customer Service. See 

Contact Information.

Results are 

not displayed 

in expected 

units of 

measure 

(mg/dL).

This may aff ect 

the way you see 

your results.

Contact Customer 

Service. See Contact 

Information.

If you do not resolve the problem, contact Customer 

Service. See Contact Information.

What You See What It Means What You Should Do

E2

The test strip has 

not fi lled enough 

for an accurate 

test. Insuffi  cient 

blood drop.

Remove the test strip 

and retest using a new 

test strip. Wait until you 

see the fl ashing blood 

drop on the display 

before testing.

E3

•  The meter is 

sensing a used 

test strip. 

•  The wrong 

control solution 

was used.

•  Remove the test strip 

and retest using a 

new test strip. Wait 

until you see the 

fl ashing blood drop 

on the display before 

testing. 

•  If control testing, 

make sure to use 

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control solution.

E4

Test strip 

not inserted 

correctly.

Remove and reinsert 

the test strip properly 

(see Preparing the 

Test Strip in section 2,

Testing).

E5     E9

E6   E12

E8   E13

Potential 

software or 

hardware issue.

Remove the test strip 

and retest using a 

new test strip. If you 

continue to have 

problems, contact 

Customer Service. See 

Contact Information.

 A repeatability study was conducted with the C

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 EZ 

blood glucose monitoring system using fi ve venous whole 

blood specimens with glucose levels from 47 to 326 mg/dL. 

Multiple replicates (n=100 per lot) were tested using multiple 

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 EZ blood glucose meters and three lots of 

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 blood glucose test strips. The following precision 

results were obtained.  
 System repeatability results for C

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 EZ meter 

using C

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 test strips 

Mean, mg/dL

Pooled Standard 

Deviation

Coeffi  cient of 

Variation, %

47

0.8

1.7

84

1.1

1.3

139

2.1

1.5

202

2.6

1.3

326

5.0

1.5

Limitations

Altitude:  Up to 20,674 feet (6,301 meters) does not 

signifi cantly aff ect results. 

Alternative Site Testing:  Not for use with Alternative Site 

Testing. 
Lipemic Specimen:  Cholesterol concentrations >1,168 mg/dL 

or triglyceride concentrations >4,709 mg/dL may produce 

inaccurate results. 
Peritoneal Dialysis Solutions:  Icodextrin does not interfere 

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 test strips. 

Xylose: Do not use during or soon after xylose absorption 

testing. Xylose in the blood will cause an interference. 
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 test strip results are not 

signifi cantly aff ected by hematocrit levels in the range of 

15% to 65%. 
Contraindications:   The system should not be used to test 

critically ill patients. Capillary blood glucose testing may not be 

clinically appropriate for persons with reduced peripheral blood 

fl ow. Shock, severe hypotension and severe dehydration are 

examples of clinical conditions that may adversely aff ect the 

measurement of glucose in peripheral blood.

7

Interference:  Certain substances occurring in the blood 

naturally (uric acid, bilirubin) or from therapeutic treatments 

(ascorbic acid, acetaminophen) will not signifi cantly aff ect 

results. The limiting concentrations of these compounds are 

listed on your test strip insert.  

Symbols Used

The following symbols are used throughout the product labeling 

for the C

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 EZ blood glucose monitoring system 

(meter packaging and labeling, and reagent and control solution 

packaging and labeling).

 Symbol 

 What It Means 

Batch code
Use by Date (last day of month)
Consult instructions for use
In Vitro Diagnostic Medical Device
Shake 15 times

Table 2 – System accuracy results for glucose 

concentration ≥ 75 mg/dL

Diff erence 

range in values 

between YSI 

laboratory 

reference 

method and 

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 EZ 

meter

Within 

± 5%

Within 

± 10%

Within 

± 15%

Within 

± 20%*

Number (and 

percent) of 

samples within 

specifi ed range

83 of 

108 

(76.9%)

104 of 

108 

(96.3%)

107 of 

108 

(99.1%)

108 of 

108 

(100.0%)

*Acceptance criterion is that 95% of the measured glucose 

values shall fall within either ± 15 mg/dL of the average 

measured values of the reference measurement procedure at 

glucose concentrations < 75 mg/dL or within ± 20% at glucose 

concentrations ≥ 75 mg/dL.

Using the Reminder Feature 

When the reminder sounds, the meter 

will automatically turn on. The reminder 

will beep 20 times, and the display will 

show the pre-meal test result you marked 

when you set the reminder. Pressing any 

button will silence the reminder.

You can now run another test by placing a test strip in the test 

strip port and following the testing instructions (see section 2, 

Testing).

When you have completed this test and 

the result is shown on the display,   will 

fl ash. To mark this test as a post-meal 

result, press M. 
If you do not want to mark this test, 

remove the test strip to turn the meter off . 

Dispose of the used test strip as medical 

waste. 

If you decide not to test after the reminder sounds, press any 

button to turn your meter off .

The meter will only set one reminder at a time. It will remember 

the last reminder set.

To Cancel a Reminder 

When the meter is off , press 

M to turn on 

the meter. The date and time will appear 

along with the  .
Press   or   twice and the reminder icon 

will disappear.
Press M to cancel the reminder.

 Service  Information 

 If you have a problem and none of the problem solving steps in 

this user guide help, contact Customer Service. See Contact 

Information. We have trained specialists to help you. 
Important 
•  Speak to a Customer Service Representative before 

returning your meter for any reason. He/she will give 

you the information needed to get your problem handled 

correctly and effi  ciently. 

•  Have your C

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 EZ blood glucose meter and 

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 test strips available when you phone. It 

would also be helpful to have a bottle of C

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control solution nearby.

Check List

This check list may be helpful when speaking with Customer 

Service:

A

B

1. Locate the serial number 

(A) and model number (B) 

on the back of the meter. 

_____________________

_____________________

2. Locate the C

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test strips’ expiration date 

on the bottle.

_____________________

3. Check the battery icon on 

the display. (See Changing 

the Batteries in section 4,

Technical, Service & Care.)

Warranty

Manufacturer’s Warranty: Ascensia Diabetes Care warrants 

to the original purchaser that this instrument will be free from 

defects in materials and workmanship for 5 years from the date 

of original purchase (except as noted below). During the stated 

5-year period, Ascensia Diabetes Care shall, at no charge, 

replace a unit found to be defective with an equivalent or current 

version of the owner’s model.
Limitations of Warranty: This warranty is subject to the 

following exceptions and limitations:
1. A 90-day warranty only will be extended for consumable parts 

and/or accessories.

2. This warranty is limited to replacement due to defects in parts 

or workmanship. Ascensia Diabetes Care shall not be required 

to replace any units that malfunction or are damaged due to 

abuse, accidents, alteration, misuse, neglect, maintenance 

by someone other than Ascensia Diabetes Care, or failure 

to operate the instrument in accordance with instructions. 

Further, Ascensia Diabetes Care assumes no liability for 

malfunction of or damage to Ascensia Diabetes Care 

instruments caused by the use of test strips or control solution 

other than the appropriate products recommended by 

Ascensia Diabetes Care (i.e., C

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 test strips and 

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 control solutions).

3. Ascensia Diabetes Care reserves the right to make changes in 

the design of this instrument without obligation to incorporate 

such changes into previously manufactured instruments.

What You See What It Means What You Should Do

Test result is 

above 

600 mg/dL.

•  Wash and dry your 

hands well and the 

test site. Repeat the 

test using a new test 

strip. 

•  If your result still 

fl ashes 

HI, contact 

your health care 

professional as soon 

as possible.

Test result is 

below 

20 mg/dL.

•  Repeat the test using 

a new test strip.

•  If your result still 

fl ashes 

LO, follow 

medical advice 

immediately.

CAUTION: Glucose levels above 250 mg/dL may indicate a 

potentially serious medical condition.

CAUTION: Glucose levels below 50 mg/dL may indicate a 

potentially serious medical condition.

If you want to mark the test result

Before you remove your test strip, press   or   to select the 

marker you want to set. The marker will fl ash.

To mark a result with the pre-meal 

marker, press M when the 

 fl ashes.

The 

 will then fl ash. This feature 

allows you to set a reminder to remind 

you to run a post-meal test. 
The reminder is available only after 

setting a pre-meal marker.

If you want to set the reminder, press M. 

The 

 will appear and stop fl ashing. 

If you do not want to set the reminder, 

press   or   and the   will disappear. 

Press M to set.

To mark a result with the post-meal marker, press   or   until 

the 

fl ashes. Press 

M to set.

To mark a result with the logbook, press   or   until the

fl ashes. Press 

M to set.

References

1. 

 US Food and Drug Administration. Use of fi ngerstick 

devices on more than one person poses risk for transmitting 

bloodborne pathogens: initial communication. US Department 

of Health and Human Services; update 11/29/2010. 

http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/

ucm224025.htm 

2. Centers for Disease Control and Prevention. CDC clinical 

reminder: use of fi ngerstick devices on more than one person 

poses risk for transmitting bloodborne pathogens. 

US Department of Health and Human Services; 

8/23/2010. http://www.cdc.gov/injectionsafety/Fingerstick-

DevicesBGM.html

3. 

American Diabetes Association. 2. Classifi cation and 

diagnosis of diabetes: Standards of medical care in 

diabetes—2020. Diabetes Care. 2020;43(supplement 1):

S14–S31.

4. American Diabetes Association: Clinical Practice 

Recommendations. Diabetes Care. 2011;34(1):S1–S96.

5. American Diabetes Association, www.diabetes.org

6. Burtis CA, Ashwood ER, editors. Tietz Fundamentals of 

Clinical Chemistry. 5th edition. Philadelphia, PA: WB Saunders 

Co; 2001;444.

7. Atkin SH, et al. Fingerstick glucose determination in shock. 

Annals of Internal Medicine. 1991;114(12):1020-1024.

4. Ascensia Diabetes Care has not validated the performance 

of the C

ONTOUR

 N

EXT

 EZ blood glucose meter when used 

with any test strips other than C

ONTOUR

 N

EXT

 test strips, 

and therefore does not warrant the performance of the 

C

ONTOUR

 N

EXT

 EZ meter when used with any test strips other 

than C

ONTOUR

 N

EXT

 test strips or when the C

ONTOUR

 N

EXT

test strip is altered or modifi ed in any manner.

5. Ascensia Diabetes Care makes no warranty regarding 

the performance of the C

ONTOUR

 N

EXT

 EZ meter or test 

results when used with any control solution other than 

C

ONTOUR

 N

EXT

 control solution.

6. Ascensia Diabetes Care makes no warranty regarding 

the performance of the C

ONTOUR

 N

EXT

 EZ meter or 

test results when used with any software other than 

the C

ONTOUR®

D

IABETES

 app (where supported) or the 

G

LUCOFACTS

 D

ELUXE

 software (where supported) from 

ASCENSIA DIABETES CARE.

ASCENSIA DIABETES CARE MAKES NO OTHER EXPRESS 

OR IMPLIED WARRANTY FOR THIS PRODUCT. THE 

OPTION OF REPLACEMENT, DESCRIBED ABOVE, IS THE 

ONLY OBLIGATION OF ASCENSIA DIABETES CARE UNDER 

THIS WARRANTY.

IN NO EVENT SHALL ASCENSIA DIABETES CARE BE 

LIABLE FOR INDIRECT, SPECIAL OR CONSEQUENTIAL 

DAMAGES, EVEN IF ASCENSIA DIABETES CARE HAS BEEN 

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Some States do not allow the exclusion or limitation of 

incidental or consequential damages, so the above limitation 

or exclusion may not apply to you. This warranty gives you 

specifi c legal rights and you may also have other rights which 

vary from State to State.
For warranty service: Purchaser must contact 

Ascensia Diabetes Care Customer Service for assistance and/

or instructions for obtaining service of this instrument. 

See Contact Information.

Supplies

Replacement Parts

To replace missing parts or reorder supplies, call Customer 

Service. See Contact Information.
Item
Two 3-volt lithium batteries DL2032 or CR2032 
C

ONTOUR

 N

EXT

 EZ user guide

C

ONTOUR

 N

EXT

 test strips

C

ONTOUR

 N

EXT

 control solution, Level 1

C

ONTOUR

 N

EXT

 control solution, Level 2

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