A single blood test measuring progesterone around day 21 of your cycle, used to check whether and when you have ovulated, for anyone trying to conceive or tracking their cycle.
1 biomarker as listed by Randox Health.
The test measures a single hormone, progesterone, which rises after ovulation and typically peaks around day 21 of a standard cycle. Because it looks at only this one marker, it is a targeted way to check whether and roughly when ovulation has happened, rather than a broader fertility or hormone panel.
Among the seven progesterone tests in our comparison group, this one sits exactly at the median price of £45. It costs a little more than the cheapest options, Medichecks and London Medical Laboratory at £39 and Forth at £44, but considerably less than Blue Horizon Medicals at £64.25 and Better2Know, which charges £175 to £195 for the same single marker.
Its score reflects that a single-marker test is judged on doing that one job well rather than on breadth, so clinical depth scores reasonably despite the low marker count. Documentation scores well too, since Randox states the sample type, marker and turnaround clearly. The score is held back by collection convenience, since it needs a venous draw at a clinic, and by results and follow-up, since results are not reviewed by a doctor as standard.
This suits you if you are trying to conceive or tracking your cycle and specifically want to confirm ovulation via a day-21 progesterone check, without paying for a wider fertility panel. At the median price for this comparison group, it is a reasonable default choice if you have no strong preference on provider.
If price is the deciding factor, Medichecks and London Medical Laboratory offer the same single progesterone marker for £39, £6 less than this Randox test. If you want results talked through by a doctor as standard, check with the provider directly, since none of the tests in this comparison group states that as included.
You attend a clinic for a venous blood draw, timed around day 21 of your cycle, which Randox sends to its lab for progesterone analysis. The provider states results are returned within 2 to 5 working days of the sample reaching the lab. Doctor review is not stated as standard.
A single-marker blood test, this measures progesterone, typically taken around day 21 of your cycle to confirm whether and when ovulation has occurred. At £45 it sits right at the median price for the progesterone tests we compare it against, cheaper than Blue Horizon Medicals (£64.25) and Better2Know (from £175), though slightly more than Medichecks and London Medical Laboratory (both £39). Results take 2 to 5 working days and are not reviewed by a doctor as standard.
The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.
A single-marker test measuring exactly what it sets out to; depth is not the point of this comparison group.
Requires a venous draw at a clinic; results in around 5 days, slower than similar tests.
Results are not doctor-reviewed and no consultation is included; the provider does not describe the report format.
Trustpilot 4.6 from 29,705 reviews; accredited lab (UKAS ISO 15189 (Randox Clinical Laboratory Services, lab 9329)); CQC registered.
£45.00 against a comparison-group median of £45.00 (-0%).
Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.
This test belongs to our Progesterone test comparison group. See how it stacks up against equivalent tests from other providers.
Joint-cheapest progesterone test, with an at-home option
A single-marker blood test for progesterone, commonly taken around day 21 of a cycle to check whether ovulation has occurred. Suits anyone tracking ovulation or fertility at home.
Progesterone test tied for the lowest price we found
A single blood test measuring progesterone, most often used to confirm ovulation partway through your cycle, but also used to monitor pregnancy or investigate suspected PCOS. Suits anyone tracking a specific point in their cycle.
Mid-priced single progesterone test, taken on day 21
A single-marker blood test measuring progesterone, typically taken on day 21 of your cycle to help assess whether ovulation has occurred.
Flexible at-home or clinic option, pricier than most peers
Progesterone measures a hormone that plays a role in ovulation and supporting early pregnancy. It suits people tracking their cycle or wanting an additional marker alongside fertility monitoring.
Priciest progesterone test in its comparison group
This is a single-marker blood test that measures progesterone, most often used around day 21 of the menstrual cycle to check whether ovulation has occurred. It suits people investigating fertility or irregular periods.
Cheaper than Better2Know's own home kit, still costly
This is a clinic-based blood test measuring progesterone, typically used around day 21 of the cycle to check for ovulation. It suits people investigating fertility issues or irregular periods who prefer a clinic visit.
Joint-cheapest progesterone test, with an at-home option
A single-marker blood test for progesterone, commonly taken around day 21 of a cycle to check whether ovulation has occurred. Suits anyone tracking ovulation or fertility at home.
Progesterone test tied for the lowest price we found
A single blood test measuring progesterone, most often used to confirm ovulation partway through your cycle, but also used to monitor pregnancy or investigate suspected PCOS. Suits anyone tracking a specific point in their cycle.
Mid-priced single progesterone test, taken on day 21
A single-marker blood test measuring progesterone, typically taken on day 21 of your cycle to help assess whether ovulation has occurred.
Flexible at-home or clinic option, pricier than most peers
Progesterone measures a hormone that plays a role in ovulation and supporting early pregnancy. It suits people tracking their cycle or wanting an additional marker alongside fertility monitoring.
