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Doctor's Assessment Included

Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.

Vitamins

Vitamin B3 (Niacin)

Vitamin B3 (niacin) is considered important for NAD+ production, which may support cellular repair and energy metabolism in older adults. Age-related changes may affect niacin status. Healthcare providers can help assess your individual needs.

Results within 4–6 working days after your blood draw (estimate)

What It Measures

This test measures niacin (vitamin B3) levels in your blood, expressed in ug/L. It may help assess whether your body has adequate niacin for NAD+ production and metabolic processes. Your healthcare provider can interpret results in the context of your health.

Why It Matters

For adults over 60, NAD+ levels are believed to naturally decline, making adequate niacin intake potentially more important. This may affect energy production and cellular repair processes. A healthcare provider can recommend appropriate dietary strategies or supplementation.

When to Test

Testing may be considered when experiencing skin rashes, digestive discomfort, or cognitive changes that could suggest niacin insufficiency. Healthcare providers may also recommend testing for individuals with restrictive diets or conditions affecting nutrient absorption.

Symptoms

Low Levels

Some people with low vitamin B3 may experience skin inflammation, digestive problems, fatigue, or difficulty concentrating. In more severe cases, a condition known as pellagra may develop. A healthcare provider can help evaluate symptoms and determine the underlying cause.

High Levels

Elevated niacin levels, particularly from supplementation, may sometimes cause flushing, itching, or gastrointestinal discomfort. Some people may experience liver sensitivity at high doses. If your levels appear elevated, consult your healthcare provider about appropriate adjustments.

Lifestyle Tips

Foods considered rich in niacin include poultry, fish, legumes, whole grains, and mushrooms. The body can also convert tryptophan from protein-rich foods into niacin. Some people may benefit from a varied, balanced diet. Discuss supplementation with your healthcare provider.

Frequently Asked Questions

What is NAD+ and why is it important?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme believed to be involved in energy production, DNA repair, and cellular signalling. Vitamin B3 is considered a key precursor to NAD+. Your healthcare provider can explain how this relates to your overall health.
Can niacin supplementation cause flushing?
Some forms of niacin supplementation may cause temporary skin flushing, warmth, or redness in certain individuals. This is generally considered harmless but can be uncomfortable. Your healthcare provider can recommend appropriate forms and dosages.
Is it possible to get enough niacin from diet alone?
Many people are believed to obtain adequate niacin through a balanced diet that includes poultry, fish, legumes, and whole grains. However, individual needs may vary. Consult your healthcare provider or a dietitian to assess whether your dietary intake is sufficient.