Vitamin B6

The Vitamin B6 test is a blood test that measures the amount of vitamin B6 (pyridoxine) in your bloodstream. Vitamin B6 is a water-soluble vitamin crucial for many bodily functions, including brain development, immune system support, protein and carbohydrate metabolism, and the production of neurotransmitters. Deficiency can lead to symptoms such as irritability, depression, confusion, weakened immunity, or nerve problems, while excess levels may cause nerve damage. This test is often used to investigate unexplained neurological symptoms, monitor nutrition levels, or assess patients on long-term medication that might interfere with vitamin absorption.