CD79A by Immunohistochemistry
Also known as: CD79A IHC
Use
This immunohistochemical stain for CD79A serves as a technical (stain-only) marker for B‑cell lineage identification. CD79A protein expression spans all stages of B‑cell maturation—from early precursors through plasma cells—and is useful in confirming B‑cell origin in leukemia, lymphoma, and other lymphoproliferative disorders.
Special Instructions
This test is performed as a stain‑and‑return (technical service only); pathologist interpretation is not included. Ordering is via electronic request or ARUP Immunohistochemistry Stain Form (#32978) for clients without electronic capability. Refer to the ARUP Immunohistochemistry Stain Offerings brochure. New York state approval status applies.
Limitations
Interpretation requires integration with clinical history and other diagnostic tests; this service does NOT include interpretation. Specimen quality—such as insufficient tissue, depletion, non‑representative type, or overheated/oven‑baked slides—may compromise results. Paraffin slides should not be oven baked. Stability of IHC staining may be affected by age of cut sections and slide handling conditions.
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
LOINC Codes
- 94736-6
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
5 unstained (3- to 5‑micron thick sections) (min: 2 slides) or tissue block
Container
Tissue transport kit (ARUP supply #47808)
Collection Instructions
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). If sending precut slides, do not oven bake.
Storage Instructions
Room temperature or refrigerated. Ship in cooled container during summer months.
Causes for Rejection
Depleted specimens; specimens submitted with non‑representative tissue type.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |
| Frozen | Indefinitely |