How Pregnancy Tests Work to Accurately Determine hCG

When you become pregnant your body starts to produce the pregnancy hormone, human Chorionic Gonadotrophin(hCG). The amount of hCG in your body doubles approximately every 2 to 3 days, and reaches a maximum at around 7 to 12 weeks into the pregnancy. Clearblue® Pregnancy Tests work by detecting the presence of hCG in your urine.

No tests are more accurate – All Clearblue Pregnancy Tests are over 99% accurate when used from the day of your expected period¹.

So sensitive you can test early – Clearblue Pregnancy Tests can be used up to 5 days sooner². Click here if you’d like to know more about early pregnancy testing

Find out more about the different Clearblue Pregnancy Tests by following the links below.

Clearblue® Digital – Unmistakably clear results in words.
With the Clearblue® Digital Pregnancy Test there’s no need to interpret the lines. Its advanced digital display gives you greater certainty in performing and reading your pregnancy test by telling you in words, whether you’re pregnant or not.

Or

Clearblue® PLUS – The only shape like it on the market. The NEW Clearblue PLUS was designed to be the easiest pregnancy testing experience, freeing you to focus on the result. It provides easy to read + or – results.

¹99% accurate at detecting typical hormone levels. Note that hormone levels vary. See product insert.
²Clearblue® can be used as early at 4 days before you expect your period. That's 5 days sooner than waiting until you miss your period to test. The amount of pregnancy hormone increases rapidly in early pregnancy. In clinical testing with early pregnancy samples, Clearblue® gave the following results: 53% of pregnant women get results 5 days sooner. 74% get results 4 days sooner. 84% get results 3 days sooner, 87% get results 2 days sooner.

Try our free digital tools – Due Date Calculator
and
When to start testing with Clearblue Ovulation Test