Multiple choice

Which of the following factors is also known as Christmas factor ?

  1. Factor VII

  2. Factor IX

  3. Factor X

  4. Factor VIII

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Factor IX or Christmas factor is one of the serine proteases of the coagulation system; it belongs to peptidase family S1. Deficiency of this protein causes hemophilia B.