Standards
Units
OGIS v0.1 supports exactly two glucose units: mg/dL and
mmol/L.
Conversion
When converting between units, implementers must use factor 18.018 (mg/dL ÷ 18.018 = mmol/L). This is a conformance requirement for OGT normalization and reference validators.
Producers may emit either unit. OGT may normalize to a single canonical unit
(typically mg/dL) for downstream consumers—document your deployment
choice.
Plausible ranges (informative)
Validators may use wide sanity bounds; clinical alerting thresholds belong in application logic, not the core schema.