Selenium (blood)

This is an important test that is typically used to diagnose selenium toxicity or deficiency.

Venous blood
1 tests included
6 days turnaround



About Selenium (blood)

What is selenium?

Selenium is an essential element for healthy bodily function. Selenium is used by the body in a variety of processes including antioxidant enzymes, thyroid function and protection from cancers. Though it is essential to have some selenium in the diet, too much selenium in the body can be toxic.

Symptoms of selenium deficiency can include dizziness, muscle weakness, nausea and heart problems. Selenium toxicity can lead to symptoms including nausea, vomiting, nail and hair loss and fatigue.  

Why take the test?

This test measures the level of selenium in the blood. It is typically used to diagnose selenium toxicity or deficiency.


What's tested

Trace Mineral

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.