Vitamin A

Checks Vitamin A, a fat-soluble vitamin involved in cell growth, immune function and vision. Suited to checking this one marker rather than a broader vitamin panel.

  • Doctor reviewed
Sample
Blood
Collection
Venous draw at clinic or nurse home visit
Results in
7 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • Vitamin A

Test specifications

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

What's tested

1 biomarker as listed by Blue Horizon Medicals.

Vitamins

  • Vitamin A

About this test

This test measures blood Vitamin A, a fat-soluble vitamin commonly discussed in relation to cell growth, immune function and vision. Because it's fat-soluble, the body stores it well, which the provider notes also makes it possible to take in excess through supplementation.

As a single-marker test it sits below the average depth for the vitamins tests we track, in the 31st percentile by marker count. Price is the more notable feature: at £158.25 it's priced well above the £85.00 median for similarly sized vitamin tests we track, an increase of around 86%.

It scores particularly poorly for value for money given that price premium, and modestly for collection convenience, since it needs a venous draw at a clinic or nurse visit and takes around 7 days to turn around. It scores better for documentation, since the biomarker, sample type, turnaround and collection options are all published, and for results and follow-up, since a doctor reviews the result. Blue Horizon has traded since 2009, holds a Trustpilot score of 4.2 from 395 reviews, and uses UKAS ISO 15189 partner labs.

Who is it for?

This suits someone who specifically wants their Vitamin A level checked with a doctor review, and isn't concerned about paying above the typical price for a single vitamin marker.

If you want to check several vitamins at once, or keep costs down, a multi-vitamin panel is likely to give you more information per pound than testing Vitamin A on its own at this price. If you have symptoms of a vitamin imbalance, see a GP for advice rather than self-testing alone.

How it works

This is a venous blood test, taken at a Blue Horizon clinic or by a home nurse visit. The sample is tested for Vitamin A, with results back in around 7 days. A doctor reviews the result before you receive it.

Pros & cons

Pros

  • A doctor reviews your result.
  • Home nurse visits are available if attending a clinic isn't convenient.
  • Clear listing of sample type, turnaround and collection options.

Cons

  • Priced around 86% above the median for similarly sized vitamin tests we track.
  • Tests only one vitamin, so it won't catch other deficiencies.
  • No at-home option; a venous draw at a clinic or nurse visit is required.

Our editorial score

Compare Health Test Score Single vitamin A test priced well above typical
Editorial confidence: 10.0/10

This single-marker Vitamin A test costs £158.25, priced well above the £85.00 median for similarly sized vitamin tests we track, an increase of around 86%. It comes with a doctor review of your result, but the price is hard to justify if you only need one vitamin marker checked. Turnaround is around 7 days.

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 7 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 7.5/10

    Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.

  • Value for money 2.2/10

    £158.25 against a median of £85.00 for the 73 similarly sized vitamins tests we track (+86%).

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

View all →

Advanced Vitamin B12 Blood Test

B12 panel with iron, red cell and clotting markers included

An 18-marker blood test focused on active vitamin B12 alongside folate, iron status and a full blood count, for investigating low energy, mood changes or suspected B12 deficiency.

8.7 / 10

Nutrition Blood Test

Wide 11-marker nutrition panel, below-median price

An 11-marker blood test covering cholesterol, inflammation, iron, magnesium, active B12 and vitamin D, giving a broad snapshot of diet-related health. Suits anyone checking whether their nutrition is meeting their body's needs.

  • At-home test
8.6 / 10

Diet and Lifestyle Blood Test

Broad 25-marker panel, no named peers to size it against

A 25-marker blood test covering cholesterol, blood sugar, iron, kidney and liver function, protein levels and key vitamins. Suits anyone wanting a broad snapshot of how their diet and lifestyle are showing up in their blood.

8.6 / 10