What is the difference between factor V Leiden and factor V?

Updated: Aug 03, 2021
  • Author: Bishnu Prasad Devkota, MD, MHI, FRCS(Edin), FRCS(Glasg), FACP, FAMIA; Chief Editor: Eric B Staros, MD  more...
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Factor V Leiden is a completely different inherited disorder in which factor V is mutated in a specific gene, which results in a hypercoagulable state. The mutation is very common, occurring in 5% of the US population. Factor V activity levels in patients with factor V Leiden are usually normal. [21]

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