This calculator evaluates the following Clinical Criteria:
- Thrombocytopenia
- Timing of platelet count fall
- Thrombosis or other sequelae
- Other causes for thrombocytopenia present
References
- Lo GK, Juhl D, Warkentin TE, et al. Evaluation of pretest clinical score (4 T's) for the diagnosis of heparin-induced thrombocytopenia in two clinical settings. J Thromb Haemost. 2006 Apr;4(4):759-65. PubMed ID: 16634744
- Cuker A, Gimotty PA, Crowther MA, Warkentin TE. Predictive value of the 4Ts scoring system for heparin-induced thrombocytopenia: a systematic review and meta-analysis. Blood. 2012 Nov 15;120(20):4160-7. PubMed ID: 22990018
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