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Test Name:Programmed Death-Ligand 1 (PD-L1) (SP263), semi-quantitative immunohistochemistry
Test Number:Path Add-on
Collect:Tissue; Formalin-fixed, paraffin embedded (FFPE) tissue block
Container:FFPE tissue block
Processing:Formalin-fixed, paraffin-embedded tissue block; or
3 unstained glass, "positively charged" slides with 4-microns formalin-fixed, paraffin-embedded tissue
Transport/Stability:Ambient (preferred)
Refrigerated
Alternate Names:GPPDL1
ISPDL1IHC
PDL1
Performing Lab:Mayo Clinical Laboratories (PDL1); R
Days Set Up:Mo - Fr
Expected TAT:5 - 7 days
Ref. Ranges:This test will be answered as percent tumor cells positive and whether greater than or equal to 5% of immune cells express PD-L1 or not.
Collection/
Processing Details:
Useful for:
Identification of neoplasms expressing programmed cell death 1-ligand 1 (clone SP263)


A pathology/diagnostic report and a brief history are required.

This test has been validated for nondecalcified paraffin-embedded tissue specimens fixed in 10% neutral-buffered formalin. This assay has not been validated on tissues subjected to the decalcification process or use of alternative fixatives for bone and bone marrow specimens or cell blocks.
Method:Immunohistochemistry (IHC) on sections of paraffin-embedded tissue using Ventana PD-L1 clone SP263. (Unpublished Mayo method)
CPT Codes:88360
Date Created:06/15/2018
Revised Date:11/14/2018