An Introduction to the Fundamentals of Coagulation: Introduction to Primary Hemostasis

Primary Hemostasis – Characteristics of the Platelet

  • Platelets are produced in the bone marrow by highly specialized cells called megakaryocytes.
  • About 70-80% of a person's total platelet count is circulating in the vasculature at any given time.
  • Approximately 20-30% of a person's total platelet count is pooled in the spleen.
  • The average lifespan of a platelet is 9-12 days.

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