Glutathione peroxidase

This is an important test used to test for selenium deficiency.

Venous blood
1 tests included
7 days turnaround



About Glutathione peroxidase

What is glutathione peroxidase?

Glutathione peroxidase is an enzyme with antioxidant properties. It catalyses a reaction between antioxidant glutathione and hydrogen peroxide, removing the damaging hydrogen peroxide from cells to produce water and glutathione disulphide, which can be later recycled back to glutathione. The activity of glutathione peroxidase requires selenium, meaning the activity of glutathione peroxidase can indicate selenium levels in the body. Selenium deficiency can lead to problems with DNA synthesis, reproduction and thyroid activity.

Why take the test?

This test measures the activity of glutathione peroxidase. It is typically used to test for selenium deficiency.


What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.