Pregnancy test statistics by brand

Confirm 1-Step

The data displayed in the charts below is a breakdown, by days past ovulation, of different pregnancy test results for this brand. All results are based on pregnancy test results submitted by our members.


25 mIU/ml

Average rating


11 dpo 69.6% 30.4% faint
12 dpo 81.8% 18.2% faint
13 dpo 73.1% 26.9% very faint





For pregnant women, this brand starts to give positive results for more than 80% by 12 days past ovulation. This means that at least 4 out of 5 pregnant women will get a positive result on 12 dpo or later.


There is not enough data to determine when this brands starts to give a 'standard' positive result for pregnant women.

Evaporation lines

Of all tests recorded using this brand, 1.3% were reported as evaporation lines. This mean around 1 in every 77 test results was an evaporation line. This is considered medium risk.

Only pregnancy test results reported by pregnant women are included. Therefore any negative results are false negatives.

A false negative result is when a pregnancy test indicates that you are not pregnant but you actually are. False negatives usually occur because there is not enough hCG in your system to be picked up by the pregnancy test. This can be caused by the test being taken too early, test sensitivity, diluted urine or failure to follow test instructions. To avoid inaccurate results you should try to wait as long as possible before testing.

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Reviews for Confirm 1-Step

What women think of this brand.

Lili93  2 years ago
Always faint pinkish line which gives false hope (ttc 2 years…) Bhcg blood test negative. I hate those tests!

Aprilgirl  9 years ago
The vertical scraping from processing on the window makes it quite hard to see early positives on this test.

Specis88  9 years ago
Small testing window that is well below plastic cover. This makes light reflect and difficult to see faint lines. I've used two of these tests, and both had fluff in the test window. I had to pop out the cover to see the window. Confirm (Australian version).

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