Description
Vitamin A is a fat-soluble vitamin that is naturally present in many of the foods we eat. Retinol is the primary form of vitamin A in humans. This test measures the level of retinol in the blood. Vitamin A is an essential nutrient required for healthy vision and skin, bone formation, immune system function, and reproduction.
Precaution
It is recommended not to eat anything 4-8 hours before the test.