LOINC Code 105305-7: Tumor area infiltrated with PD-L1 expressing immune cells/Total tumor area Immune stain (Tiss) [Area fraction]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Tumor area infiltrated with PD-L1 expressing immune cells/Total tumor area. It is commonly used with the system or sample type Tiss.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation
• Method: Immune stain

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Tumor area infiltrated with PD-L1 expressing immune cells/Total tumor area [Area Fraction] in Tissue by Immune stain
• Tumor area infiltrated with PD-L1 expressing immune cells/Total tumor area
• This term represents a measurement of PD-L1 expression in tumor-infiltrating immune cells (IC), calculated as the proportion of tumor area that is occupied by PD-L1 staining IC of any intensity.
• Cell; Cellularity; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Pathology; Point in time; QNT; Quan; Quant; Quantitative; Random; St; Stains; Stn; Tissue; Tissue, unspecified; Tot; Totl

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions