Progesterone Receptor
Label Mnemonic: IPRF
Epic Lab Code: LAB2056
Downtime Form: H-1 Surgical Pathology Requisition
Immunopathology
5238 RCP
356-2688
Specimen(s):
Tissue or FNA
Testing Schedule:
0800-1630 Monday through Friday. For additional services, contact Clinical Pathology Resident on-call at pager #3404.
Turn Around Time:
2 days
Reference Range:
The pathologist will provide an interpretative report.
Comments:
Please send a Surgical Pathology H-1 form to Immunopathology with this request.

If PR studies are desired on previous surgical material, please send a requisition to Immunopathology, 5238 RCP. Provide the patient's name, hospital number and surgical pathology specimen number. Please send a Surgical Pathology H-1 form to Immunopathology with this request.

Progesterone Receptor (PR) expression in breast carcinomas, similar to estrogen receptor positivity, has been associated with tumor responsiveness to hormonal therapy. Immunohistochemical (IHC) staining of formalin-fixed, paraffin-embedded tumor sections has proven to be a sensitive means of defining positivity. Staining in >1% of tumor nuclei is interpreted as positive.
Methodology:
Immunohistochemistry
CPT Code:
88341 Progesterone Receptor on non breast tissue
88342 Progesterone Receptor on non breast tissue
88360 Progesterone Receptor on breast tissue
 
See also:
Estrogen Receptor, Tissue or FNA