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Activated Partial Thromboplastin Time

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Activated Partial Thromboplastin Time

Lab Name:

Activated Partial Thromboplastin Time

What is the Labs Abbreviation for Activated Partial Thromboplastin Time?

APTT

What is Activated Partial Thromboplastin Time (APTT) 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

Check Out the Full List of Nursing Lab Values!

Date Published - Apr 4, 2016
Date Modified - Jun 23, 2016

Jon Haws RN

Written by Jon Haws RN

Jon Haws RN began his nursing career at a Level I Trauma ICU in DFW working as a code team nurse, charge nurse, and preceptor. Frustrated with the nursing education process, Jon started NRSNG in 2014 with a desire to provide tools and confidence to nursing students around the globe. When he's not busting out content for NRSNG, Jon enjoys spending time with his two kids and wife.