ISTH Overt DIC Score
ISTH overt-DIC score (Taylor 2001): a required underlying-disorder gate, then platelets, fibrin marker, prolonged PT, and fibrinogen graded; total 0-8, >= 5 compatible with overt DIC.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Underlying disorder associated with DIC is present
- Yes
- Platelet count
- >100 (0)
- Fibrin marker
- No increase (0)
- Prolonged PT
- <3 s (0)
- Fibrinogen
- >1 g/L (0)
Result: ISTH DIC 0 of 8: not compatible with overt DIC per Taylor 2001 (cutoff >=5); repeat scoring 1-2 days as clinically indicated.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- gate
- An underlying disorder known to be associated with DIC must be present per Taylor 2001 before scoring.
- <5
- Not compatible with overt DIC per Taylor 2001; repeat scoring 1-2 days as clinically indicated.
- >=5
- Compatible with overt DIC per Taylor 2001 (cutoff >=5).
What you enter
- Underlying disorder associated with DIC is present (required gate)
- Platelet count (>100 = 0, 50-100 = 1, <50 = 2)
- Fibrin marker (none = 0, moderate = 2, strong = 3)
- Prolonged PT (<3s = 0, 3-6s = 1, >6s = 2)
- Fibrinogen (>1 = 0, <=1 = 1)
How this is calculated
Taylor FB Jr, Toh CH, Hoots WK, Wada H, Levi M. Towards definition, clinical and laboratory criteria, and a scoring system for disseminated intravascular coagulation. Thromb Haemost. 2001;86(5):1327-1330. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.