Test Details: Vitamin B6 plays a role in the processing of protein, carbohydrates, and fats in the body. It is also important for the proper functioning of the nervous system and the immune system. It is also said to have antioxidant and anti-inflammatory properties which help in preventing chronic conditions such as heart disease and cancer. The chances of vitamin B6 deficiency are more in people having liver, kidney, digestive, or autoimmune diseases. Along with that, people who are smokers, overweight, alcoholics, and pregnant women can also have a deficiency of this vitamin.