CPT Code(s):
88361 x 2
Specimen Requirements:
At least five unstained slides or a paraffin block containing representative breast tumor
Storage/Transport: Ship at 20 – 25°C, protect from excessive heat. Include surgical pathology report.
Use:
This test is used in the diagnosis of patients with invasive breast cancer. Positive results aid in choosing appropriate treatment therapies.
Methodology:
Immunohistochemistry with image quantitation
Reported:
7 days
Reference Values:
| Antibody | % Nuclear Area | Interpretation |
| ER | < 1% | Negative |
| > 1% | Positive | |
| PR | < 1% | Negative |
| > 1% | Positive |