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.
All you need to know about testing early for pregnancy.
After the egg is fertilized, 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. Clearblue Digital Pregnancy Test with Smart Countdown can be used up to 5 days before your missed period (which is 4 days before your expected period)1.
So, for example, if you expect your period on the 15th of the month, you can test as early as the 11th. Use our helpful ‘when to test’ calculator to find out when you can test with Clearblue Digital Pregnancy Test with Smart Countdown. No matter when you test, you can be confident in the accuracy of a 'Pregnant' result with any Clearblue Digital Pregnancy Test.
But 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 present 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
Adapted from: Gnoth C. and Johnson S. Strips of Hope: Accuracy of Home Pregnancy Tests and New Developments. GeburtshilfeFrauenheilkd 2014;74(7):661–669.
So if you are thinking of testing before your missed period, why not try Clearblue Digital Pregnancy Test with Smart Countdown.
- 5 days before your missed period is 4 days before your expected period. In lab testing, pregnancy detection rates were: 95% 1 day before the expected period, 90% 2 days before, 82% 3 days before, and 51% 4 days before.