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CD19, IHC with Interpretation
Test Code90148
CPT Codes
88342
Preferred Specimen
1 formalin-fixed, paraffin-embedded tissue block submitted in IHC Specimen Transport Kit
Other Acceptable Specimens
3 unstained slides, positively charged, submitted in IHC Specimen Transport Kit
Instructions
Please include surgical pathology report
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable
Refrigerated: Indefinitely
Frozen: Unacceptable
Methodology
Immunohistochemistry (IHC)
Setup Schedule
Set up: Mon-Fri; Report available: 3 days
Reference Range
See Laboratory Report
Clinical Significance
The B-cell marker, CD19, is expressed in the B-cell lineage from pre-B cell stage up to mature post-germinal center B cells, and is absent in plasma cells and most plasma cell neoplasms. With the exception of some follicular dendritic cells and rare aberrant expression in carcinomas, CD19 is specific for the B-cell lineage.
Performing Laboratory
Quest Diagnostics Nichols Institute |
14225 Newbrook Drive |
Chantilly, VA 20153 |