Metadata
- Code
- FT4
- Unit
- ng/dL
- Category
- Thyroid
- Subcategory
- —
- Name (Russian)
- Свободный Т4
Reference Ranges
| Range type | Value |
|---|---|
| Male reference | 0.8–1.8 ng/dL |
| Female reference | 0.8–1.8 ng/dL |
| 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
- Low
- Hypothyroid state
- High
- Hyperthyroid state
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.