Lab intelligence · canonical identities
Free thyroxine
A canonical laboratory-test identity prepared for future source-backed education and confirmed personal-result tracking.
Canonical identity
Structured record
This is identity and relationship architecture—not sourced medical education.- Stable ID
- entity:laboratory-test:free-t4
- Category
- thyroid
- Aliases
- Free T4, FT4
- Measurement structure
- Free thyroxine result
- Specimen type
- blood
- Result type
- quantitative
- Compatible units
- ng/dL, pmol/L
- Reference intervals
- Source-specific ranges required; no universal range stored.
Cross-domain structure
Related records
No related pilot record
Relationships remain explicit; none are inferred from missing data.
Evidence readiness