Test Catalog

Test ID: BTKFP    
Bruton Tyrosine Kinase (BTK) Genotype and Protein Analysis, Full Gene Sequence and Flow Cytometry, Blood

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

Preferred test for confirming a diagnosis of X-linked agammaglobulinemia (XLA) in males with a history of recurrent sinopulmonary infections, profound hypogammaglobulinemia, and below 1% peripheral B cells


In females, this is the most useful test for identifying carriers of XLA.


By including protein and gene analysis, this test provides a comprehensive assessment and enables appropriate genotype-phenotype correlations.

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
BTKSPBTK, Full Gene SequenceYes, (order BTKS)Yes
BTKSQBTK, Full Gene SequencingNoYes
BTKBtk Protein Flow, BYesYes

Special Instructions Library of PDFs including pertinent information and forms related to the test

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

BTKSP: Polymerase Chain Reaction (PCR) Followed by DNA Sequence Analysis

BTK: Flow Cytometry

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


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

BTK Full-Gene Panel, B

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

B-Cell Progenitor Kinase
Btk (Bruton's Tyrosine Kinase)
Tyrosine Kinase
Tyrosine-Protein Kinase BTK (Bruton's Tyrosine Kinase)
Agammaglobulinemia Tyrosine Kinase