Source: https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/

instrument / verified-clean

# BMR/TDEE (Mifflin-St Jeor)

The current ledger marks this instrument verified clean within the source-bound verification corpus.

Status: **VERIFIED_CLEAN**Lifecycle: **verified-clean**

## Inspectable records

[01**Overview**Purpose and lifecycle](<https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/>)[02**Mechanism**Method and assumptions](<https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/mechanism/>)[03**Implementation**Binding and validation](<https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/implementation/>)[04**Qualification**Evidence and errata](<https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/qualification/>)

## Ledger state

The current ledger marks this instrument verified clean within the source-bound verification corpus.

**Area**: Biology, Medicine & Pharmacology

**Tranche**: tranche-2

**Evidence ID**: t2-014

**Ledger rows**: 1

No ledger note is attached.

## Review findings

The Mifflin-St Jeor equations and multiplicative TDEE relationship are standard and correct under the stated units. Verdict is NEEDS_REVIEW because the activity multiplier table and mapping from activity level to factor are missing, and sex-category handling is ambiguous. The educational-estimate, not-medical-advice label is appropriate.

### Formula and scope findings

No additional record

### Unit assumptions

- Weight W is in kilograms.

- Height H is in centimeters; using meters would produce an incorrect result.

- Age A is in completed years.

- The sex-specific equations are the standard Mifflin-St Jeor male and female equations.

- Activity factor is dimensionless and is applied as TDEE = BMR × activity factor.

- BMR and TDEE outputs are expressed in kcal/day.

## Boundary hardening

**BREAK_CLAIMED** · SELF_FLAGGED

An extreme but numerically representable input causes floating-point overflow to Infinity for both BMR and TDEE. The instrument should reject nonphysical or out-of-range inputs before arithmetic.

## Errata and corrections

No applied erratum is attached to this unique-name record.

## Inspectable example

4 review vectors are recorded. One source-bound sample is shown below.

````
{
  "inputs": {
    "weight_kg": 70,
    "height_cm": 175,
    "age_years": 30,
    "sex": "male",
    "activity_level": "moderately active",
    "activity_factor": 1.55
  },
  "expected_outputs": {
    "BMR_kcal_per_day": 1648.75,
    "TDEE_kcal_per_day": 2555.5625
  },
  "working": "BMR = (10 × 70) + (6.25 × 175) − (5 × 30) + 5 = 700 + 1093.75 − 150 + 5 = 1648.75 kcal/day. TDEE = 1648.75 × 1.55 = 1648.75 + 906.8125 = 2555.5625 kcal/day."
}
````

## Related workflows

[Metabolic Health Suiteprimary BMR](<https://guthlabs.ai/docs/instrument-workflows/metabolic-suite/>)[Running Coach Kitenergy budget](<https://guthlabs.ai/docs/instrument-workflows/running-coach/>)

## Sources and evidence

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

- `VERIFIED_LEDGER.json · VERIFIED_CLEAN`

- `evidence-tranche2/tranche2-results.json`

- `BOUNDARY_HAZARD_CATALOG.json`