Pregnancy test statistics by brand

First Response One 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.


100 mIU/ml

Average rating


8 dpo 45% 55% very faint
9 dpo 60% 40% very faint
10 dpo 67.3% 32.7% faint
11 dpo 81.8% 18.2% faint
12 dpo 89.1% 10.9% faint
13 dpo 82.5% 17.5% standard
14 dpo 93.3% 6.7% standard
15 dpo 91.4% 8.6% standard
16 dpo 88% 12% standard
17 dpo 90.5% 9.5% strong





For pregnant women, this brand starts to give positive results for more than 80% by 11 days past ovulation. This means that at least 4 out of 5 pregnant women will get a positive result on 11 dpo or later.


By 13 days past ovulation this brand gives a 'standard' test result. Which means the test result is easily distinguished as a positive result (usually nearly as dark or as dark as the control line)

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 First Response One Step

What women think of this brand.

AmelieD  10 years ago
I didn't find this test as effective as it's meant to be... Check out my detailed review on my blog

jfreakbol  10 years ago
This was the first pregnancy test I ever tried, and it works like a charm. Clear accurate results.

CaramelLette  10 years ago
Love this Brand... great test for the cost...

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