CD20 B CELL COUNT BY FLOW CYTOMETRY, PERIPHERAL BLOOD

Message

This is a new test effective 11/01/2017. Assessing therapeutic B-cell depletion quantitatively in any clinical context, including malignancies, autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, and membranous glomerulonephritis among others, and treatment or prevention of acute humoral rejection in positive crossmatch renal transplant recipients. Evaluation of CD19 deficiency in patients with a suspected CD19 deficiency (humoral immunodeficiency). This test should not be ordered for a comprehensive evaluation of peripheral B-cell subsets. This test should not be used for evaluating presence of CD20 on malignant or nonmalignant B cells.

Test Code

LAB123271

CPT Codes
88184, 88185

Includes

Percent CD19 and CD20 Bcells, Absolute CD19 and CD20 B cells

Preferred Specimen

One 3 mL Lavender top tube

Minimum Volume

1 mL blood

Instructions

Deliver to Flow Lab immediately (Monday-Friday day shift). Refrigerate specimen when Flow Lab is closed

Transport Temperature

Refrigerate

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

Improper tube type drawn
Frozen sample

Methodology
Flow Cytometry

Setup Schedule

Monday-Friday

Reference Range

Appropriate age-specific reference values are provided on the report.

Performing Laboratory
West Virginia University Hospital, Inc.

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.