ARUP is a national and academic, nonprofit reference laboratory with advanced hematology testing.


Featured ARUP Tests

Direct Xa Inhibitor Levels

  • Provides measurement of direct oral anticoagulant (DOAC) concentrations (apixaban, edoxaban, and rivaroxaban) in contexts in which their safe and effective use may be affected

Direct Xa Inhibitor Levels Test Fact Sheet

Prolonged Clot Time Reflex Panel

  • Reduces the number of blood draws required and can lead to more rapid diagnosis
  • Result interpretation provided by ARUP pathologists at no additional charge

Prolonged Clot Time Reflex Panel Test Fact Sheet

Serotonin Release Assay

  • Highly sensitive and specific gold standard test for the diagnosis of heparin-induced thrombocytopenia (HIT)

Featured Educational Resources From ARUP Consult®


ARUP Consult® is a free, educational web-based tool for clinicians that provides guidelines-based information on laboratory tests. Information is divided into hundreds of topics, testing algorithms, and test-specific fact sheets.

For more related decision support resources, visit Hemostasis and Thrombosis Testing | ARUP Consult.

Additional Resources

Interested in free CME on these topics? View our available video lectures.