Is 25 Low for Vitamin D3? Understanding Your Test Results
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4 min read
According to the National Institutes of Health, a blood level of 25-hydroxyvitamin D (25(OH)D) below 20 ng/mL is considered deficient for most healthy individuals. When your test results come back at 25 ng/mL, you might be unsure whether this falls into a healthy range or requires action.
