Progesterone Receptor (PR) IHC with Interpretation
Use
Immunohistochemical detection of progesterone receptor (PR) expression serves as an important prognostic and predictive marker in breast carcinoma and potentially other hormonally responsive tumors. This information aids clinicians in assessing tumor biology and tailoring endocrine therapy strategies.
Special Instructions
Not provided.
Limitations
Fixatives other than 10% formalin may adversely affect performance. Decalcified or inadequately fixed tissue may yield unreliable results. Pre‑analytical variables like ischemic time or fixation duration outside validated windows can limit interpretive accuracy.
Methodology
Immunoassay (IHC)
Biomarkers
Progesterone Receptor
Protein
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
FFPE tissue block or unstained slides (5‑micron sections), minimum of 2 slides; mounted on Poly‑L‑Lysine‑coated or Plus (+) slides.
Storage Instructions
Store at room temperature; unstained slides should be sent within 6 weeks of cutting.
Other tests from different labs that may be relevant