Vitamin B3 (Nicotinamide) Blood Test

You can order now and then attend immediately for this test between 7-7 Mon-Fri and 7-1 on Saturdays.
This private blood test for Vitamin B3 in London has a guaranteed turnaround time of 6 working days and tests for Vitamin B3 only. Turnaround Time
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A GP Referral is Included
Attend the Walk-in Laboratory
Phlebotomy is FREE
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Doctor's Comments are Available
Results are sent via Email
Severe deficiency of Vitamin B3 will lead to a condition known as pellagra.

Symptoms of pellagra will include a scaly rash, swollen mouth, vomiting and diarrhoea, disorientation and memory loss - amongst others.

This is a severe condition and can be life threatening. Lesser or short term deficiency may cause indigestion, fatigue, low mood and sores.

B3 deficiency is very rare in the western world as there are plentiful dietary sources of the vitamin. The most common cause is high alcohol intake, which can reduce the amount absorbed from the diet.

Due to the large variability in the metabolism of nicotinic acid, the dosing preparation used (immediate-release vs. extended release), and the mg doses used, the serum concentrations may range from <20 ng/mL to about 30,000 ng/mL.