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Vitamins

Vitamin B3 (Niacin) Blood Test

Vitamin B3 (niacin) is considered important for NAD+ production, which may support energy metabolism and cellular repair in men. Adequate levels may contribute to cardiovascular and metabolic health. Consult your healthcare provider for personalised guidance.

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Vitamin B3 (Niacin): what this test 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.

Vitamin B3 (Niacin): why this value matters

For men, niacin-derived NAD+ may support energy production, cardiovascular function, and cellular repair processes. Low levels have been associated with fatigue and metabolic changes. Discuss your results with a healthcare provider to determine appropriate next steps.

Vitamin B3 (Niacin): when is testing worthwhile?

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.

Vitamin B3 (Niacin): symptoms of a high or low value

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.

Vitamin B3 (Niacin): lifestyle and this value

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.

Vitamin B3 (Niacin): 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.

Tests with related values

These panels measure values from the same category as this marker.

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Vitamin B3 (Niacin)

€81,-