Test Name: QuadVysion
This test uses a combination of several antibodies (applied to a single slide) that differentially stain for basal cells and neoplastic cells in the prostate: P504S stains prostate adenocarcinoma, whereas p63 and the high molecular weight cytokeratins stain benign prostate basal epithelial tissue. These are combined with C-MYC, a proto-oncogene. C-MYC is amplified in 20-30% of breast cancer cases; associated with HER2 amplification and poor outcome. C-MYC expression in primary prostate tumor is biologically relevant and may be a predictor of future biochemical recurrence. This combination may help differentiate prostate cancer from precancerous lesions such as prostatic intraepithelial neoplasia (PIN), especially when tissue is limited.
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*: 88344
*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.