Bruton Tyrosine Kinase (BTK) Genotype and Protein Analysis, Full Gene Sequence and flow Cytometry
| Abbrev Code: | MMMISC | ||
| Order Code: | LAB4909 | Order Name: | Laboratory Miscellaneous Order |
| Methodology: | Flow cytometry | ||
| CPT Codes: | 88184 x1, 81406 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Thur; results are reported within 30 days. | ||
| Special Instructions: | Bone marrow transplants will interfere with testing. Transfusions will interfere with testing for up to 4 to 6 weeks. It is recommended that the specimen arrive within 24 hours of collection. | ||
| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 5 mL |
| Minimum\Peds Volume: | 2 mL (pediatric) |
| Container: | Purple (EDTA) |
| Collection Instructions: | Two separate EDTA specimens and the patient information sheet are required. |
Processing and Shipping
| Specimen Processing: | Whole blood. Do not process. Specimen must arrive less than 72 hours after collection.
Label one EDTA tube with BTKSP Label second EDTA tube with BTK |
| Shipping Instructions: | Ship same day; must arrive within 72 hours of collection.
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| Test Performed at or Referral Lab | Lab Sendouts (Mayo Medical Laboratories) |
| Referral Lab number: | BTKFP (89742) |
Interpretive
| Use: | Preferred test for confirming a diagnosis of x-linked agammaglobulinemia (XLA) in males with a history of recurrent sinopulmonary infections, profound hypogammaglobulinemia, and <1% peripheral B cells. |
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