Posted Date
Effective Date
Update Type New Tests
CPT Code 88360
Order Code NPDLK



PD-L1 (22C3 Keytruda) for Head and Neck Squamous Cell Cancer

Order Code:                 NPDLK                         

CPT Code:                   88360


Effective March 17, 2021, MLabs will offer PD-L1 (22C3 Keytruda for Head and Neck Squamous Cell Cancer) in-house.  


Specimen Requirements: Please submit a formalin-fixed, paraffin-embedded tissue block; or 3 unstained glass, "positively charged" slides with 4-microns formalin-fixed, paraffin-embedded tissue plus 1 unbaked, unstained slide. Slides must be dried before shipping (air dry overnight or dry in 60 degree C oven for 20 minutes). Both blocks and slides should be stored at room temperature


Methodology: Immunohistochemistry


Analytic Time: M-F, 3-5 days


Reference Range: Interpretive report