Activated Partial Thromboplastin Time Lab Values

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Outline

What is the Lab Name for Activated Partial Thromboplastin Time Lab Values?

Activated Partial Thromboplastin Time

What is the Lab Abbreviation for Activated Partial Thromboplastin Time?

APTT

What is Activated Partial Thromboplastin Time in terms of Nursing Labs?

APPT is a test that measures the amount of time it takes for a fibrin clot to form after reagents have been added to the specimen. It is useful in diagnosis clotting disorders. In conjunction with PT it can be used to differentiate the specific factor that may be missing.

What is the Normal Range for Activated Partial Thromboplastin Time?

25-39 seconds

What are the Indications for Activated Partial Thromboplastin Time?

  • Identifying
    • Congenital deficiencies in clotting
  • Monitoring
    • Effects of liver disease
    • Protein deficiency
    • Fat malabsorption on clotting

What would cause Increased Levels of Activated Partial Thromboplastin Time?

  • Vitamin K deficiency
  • DIC
  • Patients on hemodialysis
  • Afibrinogenemia
  • Polycythemia
  • Liver disease
  • Von Willebrand disease

What would cause Decreased Levels of Activated Partial Thromboplastin Time?

  • N/A

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