Alternate Test Names:
WT1; Wilms tumor gene product

Methodology: IHC

Clinical Significance:
Identifies: Wilms tumor gene product, a marker of ovarian serous carcinoma and mesothelioma. Can be employed as part of a panel of markers in the distinction of mesothelioma from adenocarcinoma, as well as the subclassification of ovarian carcinomas.

Subcellular Localization: Nuclear

Organ: Lung, OB/GYN

Disease State: Carcinomas of Unknown Primary, Mesothelioma vs. Adenocarcinoma, Small, Blue, Round Cell Tumors

CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)

Turnaround Time: Within 1-2 business days of receipt

Schedule: Monday - Friday

Specimen Requirements:
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR -
• 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm