Parameter

Values

Score

PT difference (seconds)

<0.5 seconds

0

0.5 - 1.0 seconds

5

1.0 - 1.5 seconds

12

>1.5 seconds

25

Platelets

>185,000/mm3

0

100,000 - 185,000/mm3

1

50,000 - 100,000/mm3

2

<50,000

1

Fibrinogen

>4.5 gr/L

0

4.0 - 4.5 gr/L

1

3.0 - 4.0 gr/L

6

3.0 gr/L

25