FIXMS - Overview: Hemophilia B, F9 Gene Mutation Analysis, Whole Blood

Test Catalog

Take Our Survey

Test ID: FIXMS    
Hemophilia B, F9 Gene Mutation Analysis, Whole Blood

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

Ascertaining the causative mutation in the F9 gene of patients with congenital hemophilia B (factor IX activity deficiency)


Carrier testing of females in whom the familial F9 genotype is unknown

Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)

Test IDReporting NameAvailable SeparatelyAlways Performed
MATCCMaternal Cell Contamination, BYesNo

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

Maternal cell contamination testing will be performed for all cord blood specimens. A maternal whole blood sample is required to perform this test. 


The following algorithms are available in Special Instructions:

-Hemophilia Carrier Testing Algorithm

-Hemophilia Testing Algorithm

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

Polymerase Chain Reaction (PCR)/Fluorescent DNA Sequencing
(PCR is utilized pursuant to a license agreement with Roche Molecular Systems, Inc.)

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

F9 Gene Mutation Screening, B

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

Christmas Disease
Hemophilia B
Factor IX gene