PD-L1 Combined Positive Score

**Semantic type:** Laboratory or Test Result

**Definition:** A measurement of PD-L1 expression in a tumor sample, calculated as the number of PD-L1 staining cells (tumor cells, lymphocytes, macrophages) divided by the total number of viable tumor cells, multiplied by 100.

**Synonyms:** - CD274 CPS - CPS - Cells.programmed cell death ligand 1/100 viable tumor cells in Tissue by Immune stain - Combined Positive Score - Combined Positive Score - PD-L1 CPS - PDL1 CPS