Specimen:

Tissue or FNA

Testing
Schedule:

0800-1630 Monday through Friday.

Analytic Time:

2 days

Reference Range:

The pathologist will provide an interpretative report.

Comments:

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. An immunohistochemical score is 
generated by the interpreting pathologist. A score >2 has been used to 
define PR positivity.

Methodology:

Immunohistochemistry

Instructions:

Contact University of Iowa Diagnostic Laboratories 
1-866-844-2522 (toll free) 
319-384-7213 (Fax)

CPT Code:

88342 (Technical)
88342-26 Professional Interpretation)

See also:
Estrogen Receptor, Tissue or FNA

See Additional Information:
Consultation Overview