ISTH DIC scoring system

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The ISTH group produced a simple scoring system for the diagnosis of DIC depending on the Platelet count, the PT, the fibrinogen level and critically the FDP/D-Dimer results:

Parameter Result Score
1. Platelet count

>100×109/l

<100×109/l

< 50×109/l

0

1

2

2. PT

<3s prolonged

>3s but <6s

>6s

0

1

2

3. Fibrinogen

>1.0g/l

<1.0g/l

0

1

4. FDP/D-Dimer

No increase

Moderate increase

Strong increase

0

2 (250-5,000)

3 (>5,000)

(Last reviewed October 2018)