Test Name: GATA3
GATA3 is involved in the luminal differentiation of breast epithelium; also master regulator of type 2 helper T cells. GATA3 is a nuclear marker with expression in many epithelial neoplasms (including most breast, urothelial and skin carcinoma; smaller percentages of lung, liver, pancreatic, gastric, renal, thyroid, endometrial, ovarian and salivary gland carcinoma).
A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type or one (1) unbaked, unstained slide cut at 4-5 microns for H&E staining (required) and two to three (2-3) positively charged unstained slides cut at 3-4 microns for each test/antibody ordered.
Storage and Transport
Use cold pack during transport of paraffin blocks and unstained slides. Cold pack should not be placed in direct contact with the specimen during shipping
Specimen Rejection Criteria
Turn Around Time (TAT): 2-3 Days
CPT Codes*: 88341, 88342, 88360
*The CPT codes provided with our Test Descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.