HOMA-IR Insulin Resistance Index (education) implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t5-088

Effect

Computation or source lookup only

Input and validation requirements

Finite JavaScript inputs of 1e308 for both variables overflow during multiplication and produce Infinity rather than a finite HOMA-IR value. The specification also provides no stated validation for physiologically impossible zero or negative measurements and no unit-conversion guard beyond naming mg/dL.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "fasting_glucose_mg_dL": 90,
    "fasting_insulin_uU_mL": 10
  },
  "expected_outputs": {
    "homa_ir": 2.2222222222
  },
  "working": "HOMA-IR = (90 × 10) / 405\n= 900 / 405\n= 20 / 9\n= 2.2222222222"
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche5/tranche5-results.json