Hairy Cell Leukemia, Follow-up Panel

Test Code

17819

CPT Codes
88184, 88185 (x8), 88188<br>**This test is not available for New York patient testing.**

Includes

Initial markers evaluated: CD11C, CD19, CD20, CD22, CD25, CD103, sKappa, sLambda. CD45 is used for gating.

Additional markers may be performed based on the pathologist review. These markers will be performed at an additional charge (CPT code(s): 88185 for each additional marker)

Preferred Specimen

5 mL peripheral blood collected in a sodium heparin (green-top), ACD-A (yellow-top), or EDTA (lavender-top) tube or

4 mL bone marrow collected in a sodium heparin (green-top), ACD-A (yellow-top), or EDTA (lavender-top) tube or

Tissue or body fluids: Any type is acceptable

Minimum Volume

3 mL peripheral blood • 1 mL bone marrow

Other Acceptable Specimens

Bone marrow: Pediatric heparin tube

Instructions

Peripheral blood and bone marrow: The tube must be kept at room temperature and shipped to the lab immediately.

Tissue: Any tissue type is acceptable. Tissue size is dependent upon leukocyte cellularity. (The tissue is disaggregated into single cells so that a minimum of 50,000 cells of interest are harvested.) Ship tissue in a sterile plastic container with RPMI 1640 enriched with FBS (10% FBS RPMI). Absolutely no fixative should be added. Refrigerate and ship immediately.

Body fluids: Any body fluid is acceptable. Sample size is dependent upon cellularity of the sample. (A minimum of 50,000 cells of interest in total volume of fluid). Place fluid in sterile plastic container. Absolutely no fixative should be added. Refrigerate and ship immediately.

A clinical indication and specimen source are required with each specimen. If possible, submit CBC results with differential or an EDTA tube of peripheral blood.
Do not freeze and do not place in fixative.

Because of the critical nature of these specimens, the laboratory will attempt to process all specimens received, regardless of age of specimen.

Transport Temperature

Peripheral blood or bone marrow: Room temperature
Tissue or body fluids: Refrigerated (cold packs)

Specimen Stability

Room temperature: 72 hours (may extend to 5 days depending on cell viability)
Refrigerated: Not established
Frozen: Not established

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

See Collection Instructions

Methodology
Flow Cytometry (FC)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

A.M.; P.M. Sets up 7 days a week.

Clinical Significance

To aid in the follow up of a known hairy cell leukemia.
Initial markers evaluated: CD11C, CD19, CD20, CD22, CD25, CD103, sKappa, sLambda. CD45 is used for gating.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.