Vitamin C is an antioxidant involved in connective tissue metabolism, drug-metabolizing systems, and mixed-function oxidase systems to list a few. Vitamin C deficiency causes scurvy; manifestations include impaired formation of mature connective tissue, bleeding into the skin, weakness, fatigue, and depression.
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- WHAT IT TESTS: Measures vitamin C levels.
- WHY TAKE IT: Screen for a deficiency and related health issues.
- REQUIRES FAST? Yes.