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Test Catalog

Test ID: HMAX    
Histochemistry of Sent-In Muscle Specimen Maximum

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Useful For Suggests clinical disorders or settings where the test may be helpful

Obtaining a rapid, expert opinion on unprocessed muscle specimens

Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)

Test IDReporting NameAvailable SeparatelyAlways Performed
MCL4Muscle, Level IV ConsultNo, (Bill Only)No
MCRVMuscle Consult, w/Complex Rvw of HxNo, (Bill Only)No
MCOSMuscle Consult, Outside SlideNo, (Bill Only)No
MCSPMuscle Consult, w/Slide PrepNo, (Bill Only)No
MCPROMuscle Consult, w/USS ProfNo, (Bill Only)No
ATPSATPase Acid Alkaline StainNo, (Bill Only)No
CONGRCongo Red StainNo, (Bill Only)No
OROSOil Red O StainNo, (Bill Only)No
PASSPeriodic Acid-Schiff StainNo, (Bill Only)No
TWSSTrichrome Water Soluble StainNo, (Bill Only)No
ASNESAcetate Non-specific Esterase StainNo, (Bill Only)No
ACPHSAcid Phosphatase StainNo, (Bill Only)No
CYOXSCytochrome Oxidase StainNo, (Bill Only)No
NADSNADH Dehydrogenase StainNo, (Bill Only)No
PHPHSPhosphorylase StainNo, (Bill Only)No
SDSSuccinic Dehydrogenase StainNo, (Bill Only)No
TBATPTB ATPase StainNo, (Bill Only)No
ALZRSAlizarin Red StainNo, (Bill Only)No
ANSAlpha-naphthyl StainNo, (Bill Only)No
MBS1IHC Initial Single Antibody StainNo, (Bill Only)No
MBS2IHC, Each Add'l Antibody StainNo, (Bill Only)No

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

When this test is ordered, 1 or more of the listed reflex tests will be performed and charged separately. The reviewing neuromuscular pathologist will determine the need for additional testing.


For all consultations, ancillary testing necessary to determine a diagnosis is ordered at the discretion of the Mayo Clinic neuromuscular pathologist. An interpretation, which includes an evaluation of the specimen and determination of a diagnosis, will be provided within a formal pathology report.


Frozen tissue for consultation: Appropriate additional stains may be performed and will be charged separately.

Note: Testing requested by the referring physician (immunostains, etc) may not be performed if deemed unnecessary by the reviewing Mayo neuromuscular pathologist. Electron microscopic studies are not performed on muscle biopsy specimens.

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test

Method Name A short description of the method used to perform the test

The evaluation of frozen muscle tissue includes a battery of enzyme histochemical stains or immunostains; other tests can be performed as indicated and will be charged separately.

Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

Histochemistry Muscle Spec Maximum

Aliases Lists additional common names for a test, as an aid in searching

Muscle Biopsy, Enzyme Histochemistry
Muscle Tissue
Skeletal Muscle Tissue