LODS (Logistic Organ Dysfunction System)
LODS Logistic Organ Dysfunction System (Le Gall 1996): the worst first-24-hour value across six organ systems maps to 0/1/3/5 points driving predicted hospital mortality.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Glasgow Coma Scale
- 13
- Heart rate
- 80 bpm
- Systolic BP
- 120 mmHg
- BUN
- 30 mg/dL
- Creatinine
- 1.0 mg/dL
- Urine output
- 1.5 L/day
- WBC
- 8 ×10⁹/L
- Platelets
- 200 ×10⁹/L
- Bilirubin
- 1 mg/dL
Result: LODS 4 — predicted hospital mortality 15%.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Systems
- Six organ systems, each scored 0/1/3/5 by its worst 24-hour value (neuro/cardio/renal max 5, pulmonary 3, hematologic 3, hepatic 1; total 0–22).
- Mortality
- Predicted hospital mortality via logit = −3.4043 + 0.4173·LODS. A calibrated organ-dysfunction complement to SOFA; a model estimate, not an order.
What you enter
- Glasgow Coma Scale (3–15)
- Heart rate
- Systolic BP
- BUN
- Creatinine
- Urine output
- WBC
- Platelets
- Bilirubin
The other 3 fields
- On mechanical ventilation / CPAP
- PaO₂/FiO₂ ratio (if ventilated)
- Prothrombin < 25% of standard (> 3 s above control)
How this is calculated
Le Gall JR, Klar J, Lemeshow S, et al. The Logistic Organ Dysfunction system. A new way to assess organ dysfunction in the intensive care unit. JAMA. 1996;276(10):802-810. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.