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Hematology · Internal Medicine

HIT Expert Probability (HAT) Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Result

0

Hat Band Low

Interpret only within the cited source population and criteria; use alongside complete clinical assessment.

Formula inputs

  • Hat Thrombocytopenia
  • Hat Timing
  • Hat Thrombosis
  • Hat No Other

Primary source

Cuker A et al. Evaluation of patients with suspected heparin-induced thrombocytopenia. Blood. DOI: 10.1182/blood-2012-08-451326. PMID: 23051789. Scope: HAT score counts compatible features for HIT (0–4). (2012)

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