PD-L1 by clone 28-8 [Presence] in Tissue by Immune stain 83055-4
LOINC Code
| LOINC code | 83055-4 | ||
|---|---|---|---|
| name | PD-L1 by clone 28-8 [Presence] in Tissue by Immune stain | ||
| description | This term should be used to report the presence of PD-L1 (CD274) protein expression in tumor cells as determined by immune staining with anti-PD-L1 clone 28-8. Patients with certain cancers, such as non-squamous non small cell lung cancer (NSCLC) or melanoma, whose tumors are positive for PD-L1 by 28-8 may be eligible for anti-programmed death 1 (PD-1) receptor antibody therapy, which effectively prevents the binding of PD-L1 to PD-1. The percentage of viable tumor cells that show partial or complete PD-L1 membrane staining is reported using [83053-9]. A tumor with >= 1% staining by 28-8 is considered PD-L1 positive. This term was created for, but is not limited in use to, the Dako PD-L1 28-8 pharmDx test kit, which, as of November 2016, is FDA-approved as a companion diagnostic to assess whether patients with certain cancers are eligible for nivolumab therapy. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Programmed cell death ligand 1 by clone 28-8 | ||
| property | PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold. | ||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||
| system | Tiss = Tissue, unspecified | ||
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||
| method | Immune stain | ||
Additional Names | |||
| short name | PD-L1 by 28-8 Tiss Ql ImStn | ||
Basic Attributes | |||
| class | PATH | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
History/Usage | |||
| test rank | 17744 of 2000 most commonly performed tests by labs in USA | ||
| first released | |||
| last updated | 2.73 | ||
| last change type | MIN - change to field other than name | ||
Related Names | |||
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