Biomarker reference

Vitamin D (25-OH)

Biomarker Reference Sheet — research tool, not FDA-cleared. Ranges under citation review.

Metadata

CodeVITD

Unitng/mL

CategoryVitamins

Subcategory—

Name (Russian)Витамин D

Reference Ranges

Range type	Value
Male reference	30–100 ng/mL
Female reference	30–100 ng/mL
Optimal	Optimal range not yet defined

Sex-specific reference ranges from the registry. Generic reference_range column is not used.

Provenance

Source documentation pending — reference ranges are under citation review.

Interpretation

LowAssociated with bone loss, immune dysfunction, fatigue

OptimalSupports bone health, immune function, mood

HighToxicity risk above 100

Used in Patterns

Pattern cards in progress for this biomarker category.

Validation Snapshot

NHANES validation pending — no Tier A representative dataset run yet for this biomarker.

HIPAA-aligned design · ZDR active · Anthropic BAA · Pending legal review. Zenlo Labs is a clinical decision support tool intended exclusively for use by licensed healthcare providers — not a substitute for professional medical judgment, and not intended for direct patient use.