25-hydroxyvitamin D, total — lab reference
Some search terms matched<10 severe deficiency; 10-19 mild-moderate deficiency. Toxicity assessment requires clinical context.
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What’s searchable?<10 severe deficiency; 10-19 mild-moderate deficiency. Toxicity assessment requires clinical context.
Morning collection preferred for men. Method and age matter; confirm unexpected low values.
Mayo example age 20-24: M 5.25-20.7; F <0.13-1.08. Declines with age and is method-dependent.
Supine collection and stress control improve specificity; use exact lab cutoffs.
Depends on total testosterone, SHBG, albumin, calculation, and assay.
Lab-specific. Interpret with symptoms, medication effects, and differential.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
Hydration and altitude are major modifiers. Review alongside hemoglobin and RBC indices.
Macrocytosis and microcytosis require cause-specific interpretation.
Analyzer-specific. Review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
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