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Progesterone Receptor (PR), IHC with Interpretation [36159X]
Test Code36159
CPT Codes
88360
Preferred Specimen
Formalin-fixed, paraffin embedded tissue submitted in an IHC specimen transport kit
Other Acceptable Specimens
3 unstained, (+) positively charged slides
Instructions
Please include surgical pathology report.
Per ASCO/CAP guidelines, ER (Estrogen Receptor) and PR (Progesterone Receptor) positivity requires at least 1% of tumor cells to show positive nuclear staining of any intensity. A negative result for ER and PR will be reported if < 1% of tumor cells show staining.
Per ASCO/CAP guidelines, ER (Estrogen Receptor) and PR (Progesterone Receptor) positivity requires at least 1% of tumor cells to show positive nuclear staining of any intensity. A negative result for ER and PR will be reported if < 1% of tumor cells show staining.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable
Refrigerated: Indefinitely
Frozen: Unacceptable
Methodology
Immunohistochemical Assay
Setup Schedule
Set up: Mon-Fri; Report available: 2 days
Reference Range
Interpretive report
Clinical Significance
The presence of progesterone receptors in tumor tissue cells is used to select drug therapy, especially in women with breast carcinoma.
