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Test ID 5BETH Factor V Bethesda Units, Plasma


Ordering Guidance


If type of inhibitor is unknown, order APROL / Prolonged Clot Time Profile, Plasma.



Specimen Required


Only orderable as a reflex. For more information see:

-ALUPP / Lupus Anticoagulant Profile, Plasma

-ALBLD / Bleeding Diathesis Profile, Limited, Plasma

-APROL / Prolonged Clot Time Profile, Plasma

-5INHE / Factor V Inhibitor Evaluation, Plasma


Secondary ID

607433

Useful For

Detecting and quantifying the presence and titer of a specific factor inhibitor directed against coagulation factor V

Method Name

-ALUPP / Lupus Anticoagulant Profile, Plasma

-ALBLD / Bleeding Diathesis Profile, Limited, Plasma

-ACBL / Bleeding Diathesis Profile, Comprehensive, Plasma

-APROL / Prolonged Clot Time Profile, Plasma

-5INHE / Factor V Inhibitor Evaluation, Plasma

 

Optical Clot-Based

Reporting Name

FV Bethesda Units, P

Specimen Type

Plasma Na Cit

Specimen Stability Information

Specimen Type Temperature Time
Plasma Na Cit Frozen 14 days

Clinical Information

Significant bleeding can result from the presence of a coagulation factor inhibitor and could be life threatening. Whether the inhibitor is present due to hemophilia or is of an acquired nature, it greatly complicates the treatment process of a decreased factor level. The titer of the inhibitor may determine the mode of treatment. Bethesda units are a standardization to give a uniform definition of an inhibitor.

Reference Values

Only orderable as a reflex. For more information see:

-ALUPP / Lupus Anticoagulant Profile, Plasma

-ALBLD / Bleeding Diathesis Profile, Limited, Plasma

-ACBL / Bleeding Diathesis Profile, Comprehensive, Plasma

-APROL / Prolonged Clot Time Profile, Plasma

-5INHE / Factor V Inhibitor Evaluation, Plasma

 

≤0.5 Bethesda Units

Cautions

No significant cautionary statements

Day(s) Performed

Monday through Friday

Report Available

2 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

85335

NY State Approved

Yes