F8A - Overview: Coagulation Factor VIII Activity Assay, Plasma

Test Catalog

Test Name

Test ID: F8A    
Coagulation Factor VIII Activity Assay, Plasma

Useful For Suggests clinical disorders or settings where the test may be helpful

Diagnosing hemophilia A


Diagnosing von Willebrand disease when measured with the von Willebrand factor (VWF) antigen and VWF activity


Diagnosing acquired deficiency states


Investigation of prolonged activated partial thromboplastin time

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

See Hemophilia Testing Algorithm in Special Instructions.

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test

Method Name A short description of the method used to perform the test

Activated Partial Thromboplastin Clot-Based Assay

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

Coag Factor VIII Activity Assay, P

Aliases Lists additional common names for a test, as an aid in searching

Coagulation Factor VIII Activity Assay, Plasma
Factor VIII - Off hours order 399
Factor VIII Activity Assay
Hemophilia A