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Vitamins

Vitamin B3 (Niacin)

Vitamin B3 (niacin) is considered important as an NAD+ precursor, supporting energy metabolism and cellular maintenance. Adequate levels may contribute to overall metabolic health and vitality. Your healthcare provider can help interpret your results.

Doctor's Assessment Included

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

Adequate niacin levels may support your body's NAD+ production, which is involved in energy metabolism, DNA repair, and cellular health. Low levels have been associated with fatigue and digestive changes. Your healthcare provider can assess your overall nutritional status.

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.

Tests with related values

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

InsideTracker

A 36-biomarker performance and longevity panel inspired by InsideTracker Ultimate — covering heart, hormones, metabolism, inflammation, recovery and iron status.

SHBG (Sex Hormone Binding Globulin) TSH (Thyroid Stimulating Hormone) ALT (Alanine Aminotransferase) LDL Cholesterol GGT (Gamma-Glutamyl Transferase) Cortisol DHEA-S Estradiol (E2) Free Testosterone Total Testosterone Folate (Folic Acid) Vitamin B12 Calcium Ferritin Iron (Serum) Magnesium Magnesium (Intracellular) Potassium Progesterone Sodium Transferrin CRP (C-Reactive Protein) Glucose (Fasting) HbA1c (Glycated Hemoglobin) ApoB (Apolipoprotein B) HDL Cholesterol Total Cholesterol Albumin AST (Aspartate Aminotransferase) Vitamin D (25-OH) Insulin (Fasting) Leukocyte Differential Creatine Kinase (CK) Transferrin Saturation Triglycerides Basic Blood Count
€399,-

Vitamin B3 (Niacin)

€81,-