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What happens if I don’t use the first urine after my 
longest sleep?

You may get unexpected High Fertility results. Test as soon as 
you can but drink normally.

How accurate is Clearblue® Advanced Digital Ovulation Test?

A laboratory study has shown the test to be over 99% accurate 
in detecting the LH surge (Peak Fertility).* 

I’ve not seen any High Fertility days. Why is this?

It may be that the estrogen level is not high enough to be 
detected, or your hormone changes occur close together, or you 
started testing too late.  You may still see Peak Fertility and you 
can rely on these results.  

I’ve not seen any Peak Fertility days. Why is this?

Your LH surge may be too low to be detected, or you may not 
have ovulated this cycle. This is not unusual but we recommend 
you see your physician if you do not see Peak Fertility for 3 
consecutive cycles.
If you miss a test around your LH surge you may not see Peak 
Fertility so remember to test as advised, and use the same 
holder throughout your cycle. 

Can any medication or medical conditions affect the result?

Always read the manufacturer’s instructions for any medication 
that you are taking before testing. Certain medical conditions 
and medications can give misleading results, for example if you 
are pregnant, or have recently been pregnant, have reached 
menopause, have impaired liver or kidney function, have 
polycystic ovarian syndrome, are taking fertility drugs containing 
luteinizing hormone or human Chorionic Gonadotrophin (such a 
Pregnyl® and Profasi®)**, or are taking antibiotics containing 
tetracyclines.
Some fertility treatments such as Clomid®*** may give 
misleading High Fertility results. Peak Fertility results should be 
unaffected.

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• This test works differently to other ovulation tests which detect 

one hormone.  This test detects 

2 key fertility hormones

 – 

estrogen and luteinizing hormone (LH).   It’s important for the 
test to establish ‘baseline’ levels of these hormones so start 
testing as advised and keep testing with the same holder until 
you see Peak Fertility.  

• If there’s no significant rise above the baseline level of 

hormones Low Fertility is displayed.   You may see a number of 
Low Fertility days before you see High or Peak Fertility.  

• Estrogen rises in the days before the LH surge and prepares 

your body for ovulation.  When an estrogen rise is detected 
High Fertility is displayed each day until Peak Fertility is 
detected.  

• High Fertility is indicated as a flashing smiley face.  

• If an estrogen rise isn’t detected, or the estrogen rise and LH 

surge are close together, you may not see High Fertility.

• An LH surge happens about 24-36 hours before an egg is 

released from an ovary – ‘ovulation’.  When your LH surge is 
detected Peak Fertility is displayed and is generally displayed 

after

 Low and High Fertility.  

• Peak Fertility is displayed as a static smiley face 

(it does not 

flash)

 and stays on the display constantly for 48 hours.  If your 

LH surge is detected on the first day of testing Peak Fertility will 
be displayed.  

• You may not see Low, High and Peak Fertility days every cycle.  

This is not unusual.  Refer to Questions and Answers for more 
information.  

• 

Have intercourse on High and Peak Fertility days to maximize 

your chances of getting pregnant.  

Questions and Answers

Further information

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www.clearblue.com

Clearblue® Helpline

 Monday-Friday 8:30 a.m. - 5:00 p.m. Eastern Time.

Toll-free

.

 1-800-321-3279

Please have the lot numbers             from both the outer and inner packaging. 
Calls are recorded for training and quality control.

*The sensitivity of the LH detection in Clearblue® Advanced Digital Ovulation 

Test is 40mIU/ml measured against the Third International Standard for 
urinary LH and FSH for Bioassay (71/264).

** Pregnyl® is a registered trademark of Organon USA, Inc.  

**Profasi® is a registered trademark of Ares Trading S.A.  

***Clomid® is a registered trademark of Merrell Pharmaceuticals, Inc.  

As prenatal care is very important for a baby’s health, we recommend that 
you consult your physician before you try to conceive.  

Holder made in China. Packaged in the U.S.A. 
Distributed by Procter & Gamble, Cincinnati, OH 45202
Clearblue is a registered trademark of SPD Swiss Precision 
Diagnostics GmbH.
© 2018 SPD Swiss Precision Diagnostics GmbH.  
All rights reserved. 
Pat. – see www.swissprecisiondiagnostics.com/patents
P/N 505131-11 06-2018

LIMITS OF THE TEST

Certain medical conditions may or may not affect the reliability of 
this test in predicting ovulation. These can include pregnancy, 
post-partum, menopause symptoms, birth control pills, some 
fertility medications and polycystic ovarian syndrome (PCOS). 
Women with medically diagnosed fertility problems should ask 
their health care professional if the product is suitable for them.  

This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:

(1)

 This device may not cause harmful interference, and 

(2)

 this 

device must accept any interference received, including 
interference that may cause undesired operation.

NOTE: 

This equipment has been tested and found to comply with 

the limits for a Class B digital device, pursuant to part 15 of the 
FCC rules. These limits are designed to provide reasonable 
protection against harmful interference in a residential installation. 
This equipment generates, uses, and can radiate radio frequency 
energy and, if not installed and used in accordance with the 
instructions, may cause harmful interference to radio 
communication. However, there is no guarantee that interference 
will not occur in a particular installation. If this equipment does 
cause harmful interference to television or radio reception, which 
can be determined by turning the equipment on and off, the user 
is encouraged to try to correct the interference by one or more of 
the following measures:

Reorient or relocate the receiving antenna.
Increase separation between equipment and receiver.
Connect the equipment into an outlet on a circuit different 
from that to which the receiver is connected.
Contact the dealer or an experienced radio/TV technician 
for help.

Home ovulation test. Only use test sticks for Clearblue® Advanced 
Digital Ovulation Test with the holder. For

 in vitro 

diagnostic use only. 

Store at 36° - 86°F (2°-30°C).  Keep out of the reach of children. Do 
not use if the foil wrapper containing the test stick is damaged. Do not 
use a test stick that has passed its expiry date. Do not re-use the test 
sticks. Not for contraceptive use.
These instructions are for model number 735025.  Results must be read 
on the display and not by any lines you might see on the test stick.  

If you have recently been pregnant you should wait until you 
have had 2 cycles before testing. 
If you have recently stopped using hormonal contraception 
your cycles may be irregular so you may wish to wait until 
you have had 2 cycles before testing.  
Please check with your physician if you are taking any 
medication or have any medical condition before planning a 
pregnancy.

How do I recycle the batteries and dispose of the holder ?
If you remove the batteries from the holder you will not be 
able to use it again.  

When you have finished using the holder, separate the upper 
and lower halves starting at the end nearest the display. 
Remove the batteries from under the central metal cover, 
and dispose of them according to the appropriate recycling 
protocol. Caution: Do not take apart, recharge, or dispose of 
the batteries in fire. Do not swallow. Keep away from 
children. Dispose of the rest of the holder according to the 
appropriate recycling protocol for electrical equipment. Do 
not dispose of electrical equipment in fire.

Are test sticks available separately?

No.  If you have used all the test sticks in the pack you will 
need to buy a new pack containing a holder and test sticks.  
Use the same holder throughout your cycle with new test 
sticks.
If you have any test sticks left at the end of testing, you can 
use these and the Holder for your next cycle if needed.  

I’ve used Clearblue® Advanced Digital Ovulation Test for 
several months and haven’t become pregnant. Why is this?

It can take normal healthy couples many months to achieve 
a pregnancy. We recommend you see your physician if you 
are under 35 years and haven’t become pregnant after trying 
for 12 months.  If you are over 35 years you should see your 
physician after trying for 6 months, and if you are over 
40 years see your physician straight away.

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Other symbols and what they mean

The test stick has been ejected too soon.  

Re-insert it quickly. 

A symbol will be displayed within 10 minutes if an error 
has occurred.  

An error has occurred during testing. Test 

again using a new test stick. If you have 

collected urine, use this to test again as soon 

as the display is blank. Otherwise test as 

soon as you can but drink normally and don’t 

urinate for 4 hours before testing again.

You cannot use this holder again, but you 

can use any unused test sticks.  Test again 

using another holder from a new pack, 

following the instructions carefully.  

When you insert a test stick if the display 

remains blank you may not have inserted it 

correctly.  Eject the test stick and start 

again from step 2.  If the test stick is 

inserted correctly and the display is still 

blank the holder is no longer working and 

you will need to buy a new pack.  
If the display is blank after testing it may be 

that the holder has gotten very wet and it 

is no longer working.    

This appears when you insert a test stick for 

first time.  It will also appear if you are 

testing after you have seen Peak Fertility, or 

if you have not done a test for 3 or more 

days in a row.  If you miss 3 or more tests 

and have not seen Peak Fertility it’s better to 

wait for your next cycle before testing again.  

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