What is the reference range for factor V?

Updated: Feb 05, 2020
  • Author: Bishnu Prasad Devkota, MD, MHI, FRCS(Edin), FRCS(Glasg), FACP; Chief Editor: Eric B Staros, MD  more...
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Factor V is a large glycoprotein with a molecular weight of 330,000 daltons and a plasma half-life of about 12 hours, with some reports of a half-life of up to 36 hours. [1] It functions as a cofactor in converting factor II to active factor II. It is proteolyzed by protein C/S complex. [2]

The reference range for factor V is as follows:

  •  50-150% of normal [3]

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