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HelpTest ID P504S P504S Immunostain, Technical Component Only
Ordering Guidance
This test includes only technical performance of the stain (no pathologist interpretation is performed). If diagnostic consultation by a pathologist is required order PATHC / Pathology Consultation.
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
Preferred:
-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
Acceptable: None
Useful For
Characterization of renal cell carcinoma and the identification of high-grade prostatic intraepithelial neoplasia and prostate carcinoma
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| IHTOI | IHC Initial, Tech Only | No | No |
| IHTOA | IHC Additional, Tech Only | No | No |
Testing Algorithm
For the initial technical component only immunohistochemical (IHC) stain performed, the appropriate bill-only test ID will be reflexed and charged (IHTOI). For each additional technical component only IHC stain performed, an additional bill-only test ID will be reflexed and charged (IHTOA).
Method Name
Immunohistochemistry (IHC)
Reporting Name
P504S IHC, Tech OnlySpecimen Type
TECHONLYSpecimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| TECHONLY | Ambient (preferred) | ||
| Refrigerated | |||
Clinical Information
Alpha-methylacyl coenzyme A racemase, also known as p504S, is a peroxisomal and mitochondrial enzyme that exhibits a granular expression in the cytoplasm (detected by the chromogen Fast Red). P504S expression is useful in the differentiation between benign prostate glands and prostatic adenocarcinoma as well as in characterizing primary and metastatic renal cell carcinomas.
Interpretation
This test does not include pathologist interpretation, only technical performance of the stain. If interpretation is required, order PATHC / Pathology Consultation for a full diagnostic evaluation or second opinion of the case.
The positive and negative controls are verified as showing appropriate immunoreactivity. If a control tissue is not included on the slide, a scanned image of the relevant quality control tissue is available upon request; call 855-516-8404.
Interpretation of this test should be performed in the context of the patient's clinical history and other diagnostic tests by a qualified pathologist.
Clinical Reference
1. Strojan Flezar M, Gutnik H, Jeruc J, Kirbis IS. Typing of renal tumors by morphological and immunocytochemical evaluation of fine needle aspirates. Virchows Arch. 2011;459(6):607-614
2. Molinie V, Balaton A, Rotman S, et al. Alpha-methyl CoA racemase expression in renal cell carcinomas. Hum Pathol. 2006;37(6):698-703
3. Lin F, Brown RE, Shen T, Yang XJ, Schuerch C. Immunohistochemical detection of P504S in primary and metastatic renal cell carcinomas. Appl Immunohistochem Mol Morphol. 2004;12(2):153-159
4. Jiang Z, Fanger GR, Woda BA, et al. Expression of alpha-methylacyl-CoA racemase (P504s) in various malignant neoplasms and normal tissues: astudy of 761 cases. Hum Pathol. 2003;34(8):792-796
5. Magaki S, Hojat SA, Wei B, So A, Yong WH. An Introduction to the Performance of Immunohistochemistry. Methods Mol Biol. 2019;1897:289-298
Day(s) Performed
Monday through Friday
Report Available
1 to 3 daysTest 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
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 610459 | P504S IHC, Tech Only | No LOINC Needed |
Forms
If not ordering electronically, complete, print, and send a Immunohistochemical (IHC)/In Situ Hybridization (ISH) Stains Request (T763) with the specimen.
mcl-ihc