🩸 ISTH DIC Score (Overt DIC)
Diagnose overt disseminated intravascular coagulation with the ISTH scoring algorithm.
ISTH DIC Score (Overt DIC)
Platelet count
Fibrin marker (D-dimer/FDP)
PT prolongation
Fibrinogen
When to use
Confirm overt DIC in a patient with a predisposing condition.
How it works
Platelets, D-dimer/FDP, prolonged PT and fibrinogen are scored; total ≥ 5 is compatible with overt DIC.
Key points
- Only apply when an underlying DIC-associated disorder is present.
- Score < 5 does not exclude evolving (non-overt) DIC — repeat.
- Treat the underlying cause alongside supportive haemostatic therapy.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.