Medichecks Diabetes & blood sugar

G6PD (Glucose 6 phosphate dehydrogenase) Blood Test

A single blood test measuring G6PD enzyme activity, used to look into possible G6PD deficiency, a condition linked to red blood cell breakdown after certain triggers. Suited to people asked to have this specific marker checked.

  • Doctor reviewed
Sample
Blood
Collection
In-store clinic or home nurse visit or venous draw at clinic
Results in
6 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • G6PD activity

Test specifications

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

What's tested

1 biomarker as listed by Medichecks.

Metabolic disorders

  • G6PD activity

About this test

G6PD is an enzyme that helps protect red blood cells from damage. Low activity is associated with episodes of red blood cell breakdown, sometimes triggered by certain medications, infections or foods, and the test is used to check G6PD activity levels as part of looking into that possibility; it's more common in some ethnic groups. This is a single-marker test rather than a wider panel.

We don't currently track another G6PD test to compare this one against directly. Measured against the wider set of similarly sized diabetes tests we track, £119 is well above the £60 median, nearly double, and that gap is the single biggest factor behind its low overall score: value for money comes out at the bottom end of the scale for this catalogue.

Everything else about the test is fairly standard for a single-marker Medichecks product: a venous draw at a clinic or with a home nurse rather than an at-home kit, results in around 6 days, and a doctor's comment on the result. Clinical depth, inevitably, is limited by testing only one marker.

Who is it for?

This is a narrow, specific test, worth considering if a clinician has specifically asked for G6PD activity to be checked, for example before certain medications are prescribed, or because of a family history of the condition. It isn't a general health or diabetes screen, and the single marker means it won't tell you anything beyond G6PD activity itself.

Given the price sits well above what similarly sized diabetes-related tests typically cost, it's worth checking with your GP whether this specific test is what you need before ordering it privately, since we don't have a directly comparable G6PD test to point you to instead.

How it works

This is a single-marker blood test for G6PD enzyme activity, collected via a venous draw at an in-store clinic or with a home nurse visit; there is no at-home option. Results are typically back in around 6 days, and a doctor reviews and comments on the result before you see your report.

Pros & cons

Pros

  • Result comes with a doctor's written comment, as with other Medichecks tests.
  • Clear single-marker test if G6PD activity is specifically what you need checked.
  • Home nurse visit available if you'd rather avoid an in-store clinic appointment.

Cons

  • Priced at £119, nearly double the £60 median for similarly sized diabetes tests we track.
  • Only available via a clinic or home nurse visit, not as an at-home kit.
  • No comparable G6PD test in our data to weigh this one against.

Our editorial score

Compare Health Test Score G6PD test priced above typical diabetes-panel cost
Editorial confidence: 10.0/10

This is a single-marker test for G6PD enzyme activity, priced at £119. There's no directly comparable G6PD test in our data, but against the broader set of similarly sized diabetes tests we track it costs almost twice the £60 median, which is the main reason it scores poorly on value for money. Collection needs a venous draw at a clinic or nurse visit, with results in around 6 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 30th percentile of diabetes 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 6 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 2.0/10

    £119.00 against a median of £60.00 for the 18 similarly sized diabetes tests we track (+98%).

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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