HER2/Neu Expression by Validated Immunohistochemistry

**Semantic type:** Occupational Activity

**Definition:** An immunohistochemistry assay for HER2/Neu expression in a tissue sample that uses a validated antibody in a validated testing lab.. A validated testing lab must have only 5% or less of samples classified as either positive or negative disagree with a 'validated' assay.

**Synonyms:** - HER2 Testing by Validated IHC Assay - HER2/Neu Expression by Validated IHC - HER2/Neu Testing by Validated IHC - HER2/Neu Testing by Validated Immunohistochemistry