Test Overview
Test Methodology

Immunohistochemistry (IHC)

Reference Range *

Negative (no expression). Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Tuesday, Thursday (specimen must be received by lab no later than 9:00 am to be included in that day's run)
Synonyms
  • PD-1 IHC Stain
  • PD1 IHC Stain
  • PDL1 IHC Stain
  • PDL-1 IHC Stain
  • PD-L1 IHC Stain
  • PD-L1 Keytruda (lung)
  • PD-L1 by Immunohistochemistry 22C3 Antibody (PDL1K)
Laboratory
IPOX/Muscle Lab
Section
Immunoperoxidase
Specimen Requirements
Collection Instructions

Formalin-fixed, paraffin-embedded tissue block; or 3 unstained glass, "positively charged" slides with 4-microns formalin-fixed, paraffin-embedded tissue. 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.

Normal Volume
Formalin-fixed, paraffin-embedded tissue or unstained slides.
Additional Information

Test includes pathologist interpretation of results billed as a separate additional charge or billed to the client as a global fee.

Billing
CPT Code
88360
Resources