Test Code HER2 HER2/neu Immunostain
Performing Laboratory
MaineGeneral Medical CenterReference Values
Reported as negative (0, 1+), weakly positive (2+), and strongly positive (3+) according to the interpretation guidelines in the FDA-approved HercepTestTM.Methodology
Federal Drug Association (FDA)-Approved HercepTestTM Immunoperoxidase StainSpecimen Requirements
Stain performed only at request of a pathologist.
Submit paraffin-embedded tissue block.
Note: 1. If HER2/neu score is weakly positive, score 2+, #81954 “HER2 Amplification Associated with Breast Cancer, FISH, Tissue” will be performed and charged accordingly to determine HER2/neu amplification.
2. Paraffin blocks will be returned with final report.