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CD42b, also known as platelet glycoprotein Ib, is a cell surface and transmembrane glycoprotein, expression of which commences somewhat later in megakaryocytic development compared to CD61. CD42b is also expressed by platelets. A subset of cases of Bernard-Soulier syndrome involve congenital deficiency of CD42b. Subcellular Localization: Membranous
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