Biotin Blood Test

This test measures biotin (vitamin B7) levels in your blood, a marker linked to skin, hair and metabolism. It suits people who want to check their biotin status, for example if they are concerned about deficiency or supplement use.

  • Doctor reviewed
Sample
Blood
Collection
In-store clinic or home nurse visit or venous draw at clinic
Results in
8 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • Biotin

Test specifications

Provider
Medichecks
Sample type
blood
Collection method
in-store clinic or home nurse visit or venous draw at clinic
Turnaround time
8 days
Biomarkers tested
1
At-home test
No
Doctor reviewed
Yes
Gender focus
Both

What's tested

1 biomarker as listed by Medichecks.

Vitamins

  • Biotin

About this test

Biotin, also called vitamin B7, is a water-soluble vitamin the body needs for healthy skin, hair and energy metabolism. This test measures your biotin level as a single marker, which is useful if you specifically want to check your status rather than run a wider vitamin panel.

Among the vitamin tests we track, a single biomarker places it in the lower-to-middle band for depth. On price, at £129 it costs above the typical vitamin test of similar size in our tracking.

Documentation is a strength here, with the biomarker, sample type, turnaround and collection options all spelled out clearly, aside from the report format, which isn't described. It also benefits from Medichecks' broader trust signals: a 4.5 Trustpilot score from over 2,400 reviews, UKAS ISO 15189 accredited partner labs, standard doctor review, and 25-plus years trading. Collection convenience is lower, though, since there's no at-home option and you need a venous draw at a clinic or a home nurse visit.

Who is it for?

This test suits you if you specifically want to check your biotin level, for example if you take biotin supplements or are looking into hair, skin or energy concerns, rather than run a broader vitamin panel. If you want a wider check on your vitamin status, look for a test covering multiple vitamins rather than this single marker.

If your concern relates to ongoing symptoms, it's also worth discussing them with your GP alongside taking this test.

How it works

You give your sample via an in-store clinic, a home nurse visit, or a venous draw at a clinic; there's no at-home finger-prick option for this test. The lab tests your sample for biotin, and a doctor reviews the result before your report is sent, typically within 8 days.

Pros & cons

Pros

  • Doctor review is included, so you're not left to interpret a raw biotin figure alone.
  • Listing clearly states the biomarker, sample type, turnaround and collection options.
  • A home nurse visit is available if you cannot get to a clinic.

Cons

  • No at-home collection option; you need a clinic or nurse visit.
  • At £129, it costs more than the typical vitamin test of similar size we track.
  • Checks a single marker rather than a wider vitamin panel.

Our editorial score

Compare Health Test Score Single vitamin marker, clinic visit needed
Editorial confidence: 10.0/10

This blood test measures biotin for £129, done via a venous draw at a clinic or a home nurse visit, with a doctor's comment on your result. Against other vitamin tests of similar size that we track, it is priced above the typical cost, and it checks a single marker rather than a wider vitamin panel.

Score breakdown

  • Clarity and documentation 8.0/10

    The listing publishes a short description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 6.3/10

    1 biomarkers, placing it in the 31st percentile of vitamins tests we track.

  • Collection convenience 8.0/10

    A blood sample taken at home by a visiting nurse or phlebotomist; with a venous or clinic option as well; a home nurse visit is offered; results in around 8 days, slower than similar tests.

  • Results and follow-up 7.0/10

    Results are reviewed by a doctor; the provider does not describe the report format.

  • Trust signals 9.5/10

    Trustpilot 4.5 from 2,477 reviews; accredited lab (UKAS ISO 15189 partner labs); doctor review as standard; trading 25+ years.

  • Value for money 3.9/10

    £129.00 against a median of £85.00 for the 73 similarly sized vitamins tests we track (+52%).

Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.

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