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Glypican-3 (GPC3) pin

IHC

Glypican-3 (GPC3)

Methodology: IHC

Clinical Significance:
Identifies: Glypican-3, a heparan sulfate proteoglycan that is a reliable marker for hepatocellular carcinoma, with a sensitivity and specificity exceeding both alpha-fetoprotein and HepPar1. Glypican-3 is also a marker of yolk sac tumors in the context of other germ cell neoplasms. Subcellular Localization: Cytoplasmic, granular

Organ: OB/GYN

Disease State: Germ 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