Test Code PROG Progesterone Receptor (PR) Immunostain, Technical Component Only
Ordering Guidance
This test includes only technical performance of the stain (no pathologist interpretation is performed).
For qualitative IHC testing of estrogen receptor alpha protein for diagnostic purposes without interpretation, order ESTR / Estrogen Receptor Immunostain, Technical Component Only
For prognostic or predictive IHC detection of both estrogen and progesterone receptor proteins for primary breast or non-breast specimens with interpretation, order ERPR / Estrogen/Progesterone Receptor, Semi-Quantitative Immunohistochemistry, Manual.
For interpretation and diagnosis of submitted pathology specimens with appropriate additional stains and other ancillary testing, order PATHC / Pathology Consultation.
Additional material may be needed if alternative testing is requested. See the specific specimen requirements for any alternative requested testing.
Shipping Instructions
Attach the green "Attention Pathology" address label (T498) and the pink Immunostain Technical Only label included in the kit to the outside of the transport container.
Specimen Required
Specimen Type: Tissue
Supplies: Immunostain Technical Only Envelope (T693)
Container/Tube: Immunostain Technical Only Envelope
Submit:
-Formalin-fixed, paraffin-embedded tissue block
OR
-2 Unstained, positively charged glass slides (25- x 75- x 1-mm) per test ordered; sections 4-microns thick
Forms
If not ordering electronically, complete, print, and send a Immunohistochemical (IHC)/In Situ Hybridization (ISH) Stains Request (T763) with the specimen.
Useful For
Qualitative detection of progesterone receptor protein in a diagnostic setting
Reflex Tests
Test ID | Reporting Name | Available Separately | Always Performed |
---|---|---|---|
IHTOI | IHC Initial, Tech Only | No | No |
IHTOA | IHC Additional, Tech Only | No | No |
Method Name
Immunohistochemistry (IHC)
Reporting Name
Progesterone Rec IHC, Tech OnlySpecimen Type
TECHONLYSpecimen Stability Information
Specimen Type | Temperature | Time |
---|---|---|
TECHONLY | Ambient (preferred) | |
Refrigerated |
Reject Due To
Wet/frozen tissue Cytology smears Nonformalin fixed tissue Nonparaffin embedded tissue Noncharged slides ProbeOn slides Snowcoat slides |
Reject |
Day(s) Performed
Monday through Friday
Report Available
1 to 3 daysPerforming Laboratory

Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
88342-TC, Primary
88341-TC, If additional IHC
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
PROG | Progesterone Rec IHC, Tech Only | Order only;no result |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
70854 | Progesterone Rec IHC, Tech Only | Bill only; no result |