IHC

IgM = Immunoglobulin M

Detects IgM-positive plasma cells and plasma cell neoplasms by targeting Ig mu chains. Useful for identifying leukemias, plasmacytomas, and B-cell lineage lymphomas.

Synonyms

Mu-Heavy Chain

Full Description

Detects IgM-positive plasma cells and plasma cell neoplasms by targeting Ig mu chains. Useful for identifying leukemias, plasmacytomas, and B-cell lineage lymphomas.

Methodology

IHC

Specimen Requirements

Tissue Block: Formalin-fixed, paraffin-embedded (FFPE) tumor block preferred. Unstained Slides: Recommended 2 charged slides per stain requested (minimum of 1 slide per stain), baked or unbaked. Fixation: Tissue must be fixed in 10% neutral buffered formalin for 6–72 hours.

Storage and Transportation

Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.

Turnaround Time

24 Hrs

CPT Codes

88342x1 or 88341x1