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Vitamin B3 (Niacin) Blood Test
Vitamin B3 (Niacin) Blood Test
Vitamin B3 (Niacin) Blood Test
Vitamin B3 (Niacin) Blood Test

Vitamin B3 (Niacin) Blood Test

The B vitamins are all crucial for cell metabolism, normal functioning of the central nervous system and the formation of red blood cells. This test measures the level of vitamin B3 in your blood.
Blood sample 1 biomarker included 7 working days turnaround

What's included?

Biomarker profile

  • Vitamins

Vitamins (1 Biomarker)

Special instructions

Do not eat for 12 hours prior to your test. Drink plenty of water, if you take medication then you are allowed to take it as you would normally. You should take this test before you take any vitamin or mineral supplements.
Altogether, there are 8 B vitamins, each with their own purpose and role within the body. The B vitamins are all water-soluble and crucial for cell metabolism, normal functioning of the central nervous system and the formation of red blood cells. All the B vitamins we need should be available through our diet. The B vitamins help with the converting food into fuel and metabolising fats and proteins. 

Vitamin B3 is found in foods such as eggs, peanuts, fresh fruit and vegetables, red meat and fortified cereals. Although extremely rare, vitamin B3 deficiency can occur. Symptoms include fatigue, vomiting, disorientation, memory loss and swelling of the mouth. Strict vegetarians and vegans may be at risk of vitamin B3 deficiency.

Dr Sam Rodgers MBBS, MRCGP

How it works

  • Take the test

    Collect your sample at home, visit a partner clinic, or we can even send a nurse to you.
  • Post your sample

    Send your sample back on the same day you take it in the freepost pack to our laboratory.
  • Get your results

    View your results with doctor's advice on your personal dashboard.
Laboratories you can trust

Laboratories you can trust

Trusted by the NHS and private clinics alike, you can be sure of the highest testing standards from our fully accredited partner laboratories.

Expert interpretation <br>
of your results

Expert interpretation
of your results

One of our team of doctors will review your results and give you personalised advice based on your medical history, lifestyle and health and fitness goals.

Your personal<br>
health centre

Your personal
health centre

Discover the easy way to track your health through our online portal, my.medichecks.com. View your results with doctor's advice, monitor any changes over time and see the improvements you can make to your health with simple lifestyle changes.

Questions? Let us help

Questions? Let us help

Our customer care team is on-hand to help you find the test that's right for you. Get in touch via phone, live chat or email.

What our customers say

We ask every Medichecks customer about their experience - read what they have to say

Important

Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.