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The Vitamin B7 Test measures biotin levels in the blood to assess nutritional status and detect deficiency. Biotin is essential for energy metabolism, enzyme activity, and maintaining healthy hair, skin, and nails. Low levels may result from poor diet, genetic conditions, alcoholism, or long-term antibiotic use, leading to fatigue, hair loss, or skin rashes. Doctors use this test to diagnose deficiency, monitor supplementation, and support overall metabolic health.
