Table 3. 3-T Scoring System:

Patient thickness is stratified by BMI into normal weight, overweight, and obese categories. The point assignments for timing of platelet fall and exclusion of other causes retain identical scoring to the Warkentin 4-T model.

Variable	0 points	1 point	2 points
Patient Thickness (BMI)	18.5–24.9 kg/m2	25–29.9 kg/m2	>30 kg/m2
Timing	<4 days	Onset > day 10	5–10 days
oTher	definite	possible	none