G6PD Deficiency
G6PD is an enzyme that protects red blood cells, and this quick, simple test checks your levels to confirm the treatment is safe for you. A G6PD blood test must be undertaken prior to receiving high-dose vitamin C infusions.
£200 in clinic.
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Understanding G6PD Deficiency
Glucose-6-Phosphate Dehydrogenase (G6PD) is an enzyme that helps protect red blood cells from oxidative stress. If you’re deficient in G6PD, your red blood cells become more vulnerable to damage when exposed to certain triggers, including high-dose vitamin C. It’s the most common inherited enzyme disorder, passed down via the X chromosome and more commonly diagnosed in men.
Most people with the condition are otherwise healthy and unaware they have it until tested or exposed to a trigger — which is why a simple G6PD blood test is a required safety step before any high-dose vitamin C infusion.
About the G6PD Deficiency Blood Test
Why Choose Effect Doctors
Doctor-led preventive health screening
Overseen by our team of GMC-registered doctors, ensuring every test result is interpreted with clinical expertise.
Comprehensive evaluation and lab testing
Accurate enzyme-level analysis carried out through accredited laboratory testing.
In-depth consultation and personalised report
Discuss your results one-to-one with a member of our clinical team, who’ll explain what they mean for your treatment plan.
Flexible, convenient access
Available 7 days a week at our Soho and Westfield London clinics, or delivered in the comfort of your home or hotel.
Take Control of Your Health
Book your G6PD Deficiency blood test today — a simple, essential step before high-dose vitamin C infusions, and a proactive step toward lifelong wellness.
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