Vitamin C, or ascorbic acid, is a water-soluble vitamin essential for numerous physiological functions, including immune support, antioxidant defense, and collagen synthesis. Since the body cannot store large amounts of vitamin C, excess amounts are excreted in urine. Measuring vitamin C levels in urine can provide insights into dietary intake, absorption efficiency, and overall health.
Urine vitamin C testing helps assess whether you're consuming adequate amounts, if your body is absorbing it properly, or if you're excreting excessive amounts, which may indicate over-supplementation or other health concerns.