CD34, QBEnd/10 by Immunohistochemistry

Casandra

Casandra Test Code AR36006Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 2003556CPT Code 88342

CD34, QBEnd/10 by Immunohistochemistry

Also known as: CD34 IHC

Clinical Use

Order Test

Use

Immunohistochemistry (IHC) staining for CD34 using clone QBEnd/10 serves as a technical (stain and return) service, useful for identifying CD34 expression in hematopoietic progenitor cells and vascular endothelial cells. It does not include interpretation by a pathologist and is useful in contexts such as evaluating markers of immaturity in leukemias or diagnosing tumors like gastrointestinal stromal tumors and angiosarcomas when interpreted clinically. This service is technical only, and any diagnostic interpretation must be ordered separately. The test is New York state approved. (Technical stain only.)

Special Instructions

Not provided.

Limitations

Specimen must be formalin-fixed (10% neutral buffered formalin) and paraffin-embedded (cells in cellblock if cytology). Frozen specimens unacceptable; degraded or non-representative tissue unacceptable. Slides or blocks must avoid excessive heat. If sending precut slides, do not oven bake. Frozen specimens unacceptable. This is a technical stain only and does not include interpretation—pathologist review must be ordered separately.

Test Details

New York Approved

Methodology

Immunoassay (IHC)

Biomarkers

2 components

CD34, QBEnd/10 by IHC • IHCCD34, QBEnd/10 Reference Number • IHC

Result Turnaround Time

1-3 days

Specimen

Tissue (Fixed (Non-FFPE))

Volume

Not provided

Minimum Volume

Not provided

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). Send tissue block or 5 unstained (3- to 5‑micron thick) positively charged slides. If sending precut slides, do not oven bake.