Test ID: BTKFP
Bruton's Tyrosine Kinase (BTK) Genotype and Protein Analysis, Full Gene Sequence and Flow Cytometry
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
Useful For Suggests clinical disorders or settings where the test may be helpful
In males, this is the preferred test for confirming a diagnosis of X-linked agammaglobulinemia (XLA), and is indicated in males with a history of recurrent sinopulmonary infections, profound hypogammaglobulinemia, and <1% peripheral B cells. By including both protein and gene analysis, this test provides a comprehensive assessment and enables appropriate genotype-phenotype correlations.
In females, this is the most useful test for identifying carriers of XLA.
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 ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| BTKSP | BTK, Full Gene Sequence | Yes, (order #89307) | Yes |
| BTKSQ | BTK, Full Gene Sequencing | No | Yes |
| BTK | Btk Protein Flow, B | Yes | Yes |
Additional Tests Lists test(s) that are always performed, at an additional charge, with the initial test(s)
| Test ID | Secondary ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|---|
| NPLXT | 81769 | Rapid DNA Extraction | No | Yes |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
When this test is ordered, a DNA extraction will always be performed at an additional charge.
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
BTKSP/29305, BTKSQ/89827, Polymerase Chain Reaction (PCR) Followed by DNA Sequence Analysis
(PCR is utilized pursuant to a license agreement with Roche Molecular Systems, Inc.)
BTK/89011: Flow Cytometry
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
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)
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