Early pregnancy testing

All you need to know about testing early for pregnancy.

If you think you might be pregnant, you want to know right away.   But it’s important to understand what’s happening in your body so you know how soon you can test.

After the egg is fertilised, it travels to the uterus (womb) and implants itself in the uterine wall.  At this stage tiny amounts of the pregnancy hormone, hCG, start to appear in your urine.  It is this hormone that all home pregnancy tests detect and some tests are so sensitive that they can be used up to 6 days before your missed period (which is 5 days before your expected period).

So, for example, if you expect your period on 15th of the month, you can test as early as the 10th.  Use our helpful ‘when to test’ tool to find out how soon you can test with Clearblue Early Detection Pregnancy Test - no test can tell you sooner

When did your last period start?
E.g., 22/10/2020
Your usual cycle length:
If you took an ovulation test add the date of your positive result here (optional)
E.g., 22/10/2020
Calculate when I can test

First day you can test

Early Detection Pregnancy Test
Results 6 days
before your missed period1

Informatie over uw persoonlijke menstruatiecyclus

Start of your last period
Positive ovulation test date
Your usual cycle length:
Results are based on the information you have provided.
Change my information

Results are based on the information you have provided.

So if you are thinking of testing before your missed period, why not try Clearblue Early Detection Pregnancy Test, which has our highest pregnancy detection rate in early testing. See chart below for results of lab testing with early pregnancy samples:

First day you can test
Day vs missed period -6 -5 -4 -3 -2 -1 0
Day vs expected period -5 -4 -3 -2 -1 0 +1
% of Pregnancies detected 79% 96% > 99% > 99% > 99% > 99% > 99%

Note: The ‘missed period’ is the day after the day you expect your period.

No matter when you test, you can be confident in the accuracy of a 'Pregnant' result with any Clearblue Pregnancy Test.

However, if you are testing early, you should be aware that even if your result is not pregnant, you may still be pregnant.  This is because levels of hCG vary from woman to woman and there may not yet be enough hormone for the test to give a positive result.  HCG levels rise rapidly in early pregnancy, as shown in the graph below, meaning that if you test again on the day of your expected period, your result (whether positive or negative) will be over 99% accurate.  

Rise of pregnancy hormone
(hCG) in early pregnancy

Relative hCG
hCG can start to appear in urine around this time
First day you can test with Clearblue Early Detection
Days before missed period

Result 6 days before your missed period

Early Detection Pregnancy Test

Early Detection Pregnancy Test

Find out