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Substance Name: Platelet factor 4
RN: 37270-94-3


  • A CXC chemokine that is found in the alpha granules of PLATELETS. The protein has a molecular size of 7800 kDa and can occur as a monomer, a dimer or a tetramer depending upon its concentration in solution. Platelet factor 4 has a high affinity for HEPARIN and is often found complexed with GLYCOPROTEINS such as PROTEIN C.

Molecular Formula

  • Unspecified

Classification Codes

  • Coagulants
  • Hematologic Agents
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Names and Synonyms

Name of Substance

  • Platelet factor 4

MeSH Heading

  • Platelet factor 4


  • Antiheparin factor
  • Chemokine CXCL4
  • CXCL4
  • CXCL4 Chemokine
  • gamma-Thromboglobulin
  • Heparin Neutralizing Protein
  • PF 4

Systematic Name

  • Blood platelet factor 4

Registry Numbers

CAS Registry Number

  • 37270-94-3

System Generated Number

  • 0037270943