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.
The verdict
One Step's Ultra Early Pregnancy Test Strips are bulk-priced at £1.16 for 3 tests with a 10mIU sensitivity rating, among the more sensitive strips available on paper for testing before a missed period. Best for cheap, frequent testing during the two-week wait. The clearest reason to be cautious: it's a basic line read with no digital confirmation and less brand recognition than Clearblue or First Response.
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.
Is the Ultra Early Pregnancy Test Strips, 10mIU worth it?
- Extremely low cost per test, ideal for frequent early testing
- High-sensitivity 10mIU rating on paper
What are the downsides of the Ultra Early Pregnancy Test Strips, 10mIU?
- 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.
How it compares
| ClearblueDigital Pregnancy Test with Weeks Indicator |  | BootsPregnancy Test Strips, 5 Tests | |
|---|---|---|---|---|
| Price | £1.16 (3 tests) | £10.00 (2 tests) | About £4 for 1 test | £4.99 (5 tests) |
| Overall score | 7.5/10 | 8.2/10 | 6.3/10 | 6.9/10 |
| Format | Line test strips | Digital, word result | Midstream stick | Line test strips |
| Pack size | 3 tests (also sold in larger multi-packs) | — | 1 or 2 tests | 5 tests |
| Sensitivity | 10mIU/ml | Can be used from the day of your expected period | — | — |
Frequently asked questions
How sensitive is the One Step Ultra Early test?+
It has a 10mIU/ml sensitivity rating, which puts it among the more sensitive strips available on paper, for testing before a missed period.
Why is the One Step test so cheap?+
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, sold in small multi-packs at a fraction of a penny per test compared to branded options.
Who is the One Step Ultra Early test best for?+
It suits 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.