Prothrombin Time

Normal range around 12-16 secs

Ingredients

• Rabbit brain thromboplastin

• Calcium

• Test plasma

Causes of prolongation

• Indicates deficiency or inhibition of

  • factor VII
  • factor X
  • factor V
  • factor II
  • fibrinogen
• common causes
  • Liver Disease
  • Warfarin therapy
  • Disseminated Intravascular Coagulation

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