Medichecks vs Randox: Which UK Blood Test Provider Should You Choose?
Medichecks and Randox Health both sell private blood tests in the UK, which is about where the similarities end. Medichecks is the at-home giant: you order online, prick your finger or visit one of its clinics, and results land on your phone within a couple of days. Randox is the clinic-based operator, best known for its walk-in health screening centres where a professional draws your blood while you wait. One is built around convenience, the other around the clinical experience of a real lab visit.
That honest difference matters more than almost anything else when you are choosing between them. This guide lays out how the two actually compare on price, range, turnaround and the experience itself.
The core difference: at-home kit vs clinic visit
Medichecks has been around since 2004 and now lists roughly 75 single tests, one of the widest catalogues in the country. Order anything from a £19 testosterone check to a full health MOT and you can do it as a finger-prick from your sofa, with an optional clinic appointment if you would rather not prick your own finger.
Randox Health is a very different proposition. It is a major diagnostics company that runs its own testing labs and health screening centres across the UK. You book into a clinic, a clinician takes the sample, and in many cases you get results the same day or within 24 to 48 hours. There is no finger-prick, nobody doubling as their own phlebotomist, and a doctor is on site if anything needs explaining there and then.
So the short version: Medichecks brings the test to you, Randox brings you to the clinic. If the thought of pricking your own finger puts you off, that single fact may settle it.
Pricing: Medichecks wins on single tests
For a one-off purchase, Medichecks is consistently cheaper, often by a wide margin. Here are current same-marker prices on both sites:
| Test | Medichecks | Randox Health |
|---|---|---|
| Thyroid function | £45 | £46 |
| Vitamin D | £39 | £46 |
| Full Blood Count | £59 | £84 (General Health At-Home) |
| HbA1c (diabetes) | £46 | bundled into panels |
| Testosterone | £19 | bundled into panels |
The interesting part is that Randox’s at-home offering is thin. Its headline General Health at-home kit costs £84 and bundles several markers together, where Medichecks sells most of those same markers individually at £39 or less. If you want one specific number, Medichecks nearly always costs less.
Randox really comes into its own at the top end with the clinic-based screening packages. Its Complete STI clinic test is £227 and its Sports Performance clinic test is £237, which reflects the full service: a professional draw, on-site staff, and a more comprehensive panel rather than a single marker.
Test range: hundreds of single markers vs focused screening
Medichecks sells the widest range of any UK provider, with cheap single tests plus broader profiles across general health, hormones, vitamins, heart, liver, fertility, sports and sexual health. Need a progesterone check, a lipoprotein test or a hair loss panel on their own? Medichecks has them.
Randox Health on our data carries fewer individual tests and concentrates on screening panels and clinic packages. That is a fair trade for what it is, because the clinic setting is where Randox shines, especially for people who want the reassurance of a professional draw rather than guessing at their own finger-prick.
If you already know the exact marker you want to check, Medichecks is the simpler, cheaper route. If you value a structured screening experience with someone handling the sample for you, Randox is built for that.
How the sample and results work
| Medichecks | Randox Health | |
|---|---|---|
| Blood draw | Finger-prick kit or clinic appointment | In-clinic professional draw |
| Turnaround | 24–48 hours | Often same day, up to 24–48 hours |
| Reporting | Online, plain-English notes | Online report, on-site staff can explain |
| Accreditation | UKAS ISO 15189 labs | Own labs, UKAS accredited |
Medichecks posts you a kit, you take a small finger-prick sample and send it off, and results come back online in 24 to 48 hours. Its reports are clear and flag anything out of range, telling you to see a GP rather than self-diagnose.
Randox runs its own accredited labs and you visit a clinic for the draw. That can mean same-day results, which is a genuine advantage if you need an answer quickly before a specific date. You also have a real person handling the sample, which removes the most common reason people avoid home tests in the first place.
Which one should you pick?
There is no across-the-board winner because the two suit different habits:
- Choose Medichecks if you want one cheap test now, need a single marker, prefer testing from home, or would rather keep the cost down. For almost every one-off purchase it is the value pick.
- Choose Randox Health if you want a professional to take the sample, value same-day results, or prefer a structured clinic screening package over assembling your own kit.
I would buy a one-off thyroid or vitamin D test from Medichecks and save the difference. If I wanted a broader health screen done properly in a clinic with someone on hand to talk it through, Randox is the experience I would book.
Compare across all providers
To see how these two sit against every other UK provider for the same marker, visit our compare page and search for the test you care about, for example vitamin D or thyroid blood tests, sorted by price to find the cheapest option.
| Provider | Cheapest typical single test | Results time | Delivery |
|---|---|---|---|
| Medichecks | £19 (testosterone) | 24–48 hours | Home kit or clinic |
| Randox Health | £46 (thyroid / vitamin D) | Same day to 48 hours | Clinic (and some at-home kits) |
Header image from Pexels
Prices checked 31 August 2026. They change often, so always confirm the current price on the provider’s site before you buy.