Heparin-induced thrombocytopenia diagnostic criteria

Heparin-induced thrombocytopenia
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];

Overview

The 4Ts scoring system has diagnostic value.

• 0 to 3 points: low probability
• 4 to 5 points: intermediate probability
• 6 to 8 points: high probability

The American Society of Hematology, as part of the Choosing Wisely program, states:

"Don’t test or treat for suspected heparin-induced thrombocytopenia (HIT) in patients with a low pre-test probability of HIT."