Vitamin b3 (niacin)

This is an important test that can be used to detect a vitamin B3 deficiency or toxicity.

Venous blood
1 tests included
7 days turnaround



About Vitamin b3 (niacin)

What is vitamin B3 (niacin)?

Vitamin B3 or niacin is important for breaking down and using energy from food. Vitamin B1 also contributes to the health and function of the nervous system, skin and digestive system. Food high in vitamin B3 includes lean meats, fish, eggs, legumes and whole grains. A vitamin B3 deficiency may lead to pellagra. Symptoms of pellagra include diarrhoea, skin problems and dementia.

Why take the test?

This test measures the level of vitamin B3 and can be used to detect a vitamin B3 deficiency or toxicity.


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.