One Step
Ultra Early Pregnancy Test Strips, 10mIU
7.5/10 overall£1.16 (3 tests)
Very low-cost bulk strip tests with a high-sensitivity 10mIU threshold, aimed at frequent early testers.
One Step's strips are the far end of budget testing in this category — sold in small multi-packs at a fraction of a penny per test compared to branded options, with a 10mIU sensitivity rating that puts them among the more sensitive strips available, at least on paper, for testing before a missed period.
As with the Wondfo-style bulk strips in the ovulation category, the trade-off is entirely about presentation, not core chemistry: a basic line read with no digital confirmation, and less brand recognition than Clearblue or First Response for anyone who wants a familiar name on a result this significant.
These suit the same use case as Wondfo's bulk ovulation strips — cheap, frequent testing during the two-week wait — with a branded digital test kept in reserve to confirm a result in words rather than a line.
What we liked
- Extremely low cost per test, ideal for frequent early testing
- High-sensitivity 10mIU rating on paper
Where it falls short
- Line-only read with no digital confirmation
- Less brand recognition than Clearblue or First Response
Specs
- Format
- Line test strips
- Pack size
- 3 tests (also sold in larger multi-packs)
- Sensitivity
- 10mIU/ml
How we scored it
Accuracy & Sensitivity
Claimed detection accuracy and, for pregnancy tests, how early before a missed period it can pick up hCG.
High-sensitivity rating suited to early testing before a missed period.
Ease of Reading
How unambiguous the result is — digital word result vs. a line you have to interpret yourself.
Basic line-comparison read, no digital confirmation.
Value per Test
Cost per individual test in the pack, since these are used repeatedly rather than bought once.
Extremely low cost per test.
Weighted by importance for this category — see our editorial policy for how we test.
The alternative
Clearblue
Digital Pregnancy Test with Weeks Indicator
A digital test that spells out "Pregnant"/"Not Pregnant" in words and estimates how many weeks since conception.