Pin your most used calculators here by clicking the star in the dropdown.
Allred Score for ER/PR
Clinical Context & Background
The Allred Score combines the percentage of cells that stain positive for hormone receptors (Proportion Score) with the intensity of that staining (Intensity Score). It is used to define ER/PR status, which is critical for determining eligibility for endocrine therapy.
Formula Logic
Total Score (0-8) = Proportion Score (0-5) + Intensity Score (0-3)Reference Data
| Total Score | Interpretation | Endocrine Therapy |
|---|---|---|
| 0 - 2 | Negative | Not Indicated |
| 3 - 8 | Positive | Indicated (Benefit likely) |
Evidence-based oncology decision support. Verify with clinical guidelines.