Progesterone Receptor (PR) | IHC
| Test Details | Prognostic and predictive marker in breast and other carcinomas |
| Methodology | Immunohistochemistry |
| Performed | Monday – Friday |
| Turnaround | 2 – 3 business days |
| Specimen Requirements | For Ventana IHC, sections should be on Plus(+) charged slides. Minimum specimen requirement: 2 slides. If requesting interpretation, please submit an H&E slide. |
| Sample Collection | It is important to indicate the collection time so total fixation time can be calculated. The total duration of formalin fixation should be in the range of 6-72 hours. Devitalization time is not required for core biopsies where specimens are immediately transferred to formalin. Testing is not validated for decalcified specimens. |
| Storage/Transport Conditions | Room temperature (use cold packs for transport of blocks during summer months) |
| CPT Code(s) | 88342 |