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Muscle-Specific Actin (MSA) by Immunohistochemistry
Ordering Recommendation
Refer to ARUP Immunohistochemistry Stain Offerings brochure at www.aruplab.com/ap/resources.
New York DOH Approval Status
Specimen Required
Tissue or cells.
Formalin fix (10 percent neutral buffered formalin) and paraffin embed specimen (cells must be prepared into a cellblock). Protect paraffin block and/or slides from excessive heat. Transport tissue block or 5 unstained (3- to 5-micron thick sections), positively charged slides in a tissue transport kit (ARUP supply #47808). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 2 slides). If sending precut slides, do not oven bake.
Room temperature or refrigerated. Ship in cooled container during summer months.
Specimens submitted with non-representative tissue type. Depleted specimens.
IMMUNOHISTOCHEMISTRY ORDERING AND SUBMISSION DETAILS: Submit electronic request. If you do not have electronic ordering capability, use an ARUP Immunohistochemistry Stain Form (#32978) with an ARUP client number. For additional technical details, contact ARUP Client Services at (800) 522-2787.
Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable
Methodology
Immunohistochemistry
Performed
Mon-Fri
Reported
1-3 days
Reference Interval
Interpretive Data
FDA
Note
This test is performed as a stain and return (technical) service only.
Hotline History
CPT Codes
88342
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2004012 | Muscle-Specific Actin by IHC | |
| 2004013 | Muscle-Specific Actin Reference Number | 94736-6 |
Aliases
- Action, muscle-specific staining
- MSA
- MSA IHC, MSA antibody staining
- MUSA antibody immunostaining
- MUSA IHC
- muscle-specific active IHC
