We are proud to announce that PhenoPath is now a Quest Diagnostics Company.
CD20 is a cell surface-associated protein expressed during the middle to later stages of B cell maturation in the bone marrow, and on all normal mature B cells. CD20 ceases to be expressed at the terminal differentiation of B cells to plasma cells. CD20 is expressed on the great majority of mature B cell neoplasms, and on a significant subset of immature B cell neoplasms, but only rarely on plasmacytic neoplasms. CD20 is the target of the therapeutic antibody known as Rituxan. Subcellular Localization: Membranous
Organ: Blood/Bone Marrow
Disease State: Large Cell Undifferentiated Malignant Neoplams
CPT Code(s): 88342 or 88341. The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
Turnaround Time: Within 1-2 business days of receipt
Schedule: Monday - Friday
• 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