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Hematology Ā· Laboratory Medicine

Citrate-Corrected Platelet Count calculator

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

Clinical inputs

Standard citrated tubes dilute whole blood by approximately 9.1% (fraction 0.091) unless a different collection ratio is documented.

Result

Complete all required inputs to calculate the score.

Formula inputs

  • Measured platelet count (Ɨ10ā¹/L)Accepted range: 1 to 2000
  • Citrate dilution fraction (fraction)Accepted range: 0.05 to 0.15

Primary source

Schmaier AH, Smith CA. Laboratory evaluation of hemostasis and thrombosis. In: Hoffman R et al., Hematology. DOI: 10.1016/B978-0-323-45731-6.00015-3. PMID: 30266112. Scope: platelet counts in citrate-anticoagulated specimens are corrected for anticoagulant dilution by dividing the measured count by (1 āˆ’ dilution fraction), commonly ~0.091 for standard 9:1 blood-to-anticoagulant collection. (2018)

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