GNRI Calculator
Geriatric Nutritional Risk Index — stratify perioperative nutritional risk.
Formula: GNRI = (1.489 × Serum Albumin [g/L]) + (41.7 × Current Weight / Ideal Weight)
Ideal body weight calculated via Lorentz formula. Weight ratio capped at 1.0.
Normal range: 35–50 g/L
Interpretation
GNRI ≥ 98: No nutritional risk
GNRI 82–97.9: Moderate nutritional risk
GNRI < 82: Severe nutritional risk