The Vitamin B6 test measures the level of vitamin B6 (pyridoxine) in the blood, which is essential for metabolism, brain function, and red blood cell production. It helps diagnose vitamin B6 deficiency or toxicity.

Preparation: No special preparation; fasting is not usually required unless specified by your healthcare provider.  

Procedure: A simple blood draw.  

Consult your healthcare provider for personalized guidance based on the results.