Lymphocyte Subset Panel 5 : 8360

Please submit a copy of the most recent CBC with differential report and any clinical information related to the patient's disease state. The CBC w/diff is needed for the reporting of the flow cytometry interpretative results.

Test Code
CD4PF or 8360

Alias/See Also
CD4; Immunophenotyping (CD4)

CPT Codes

Panel includes: CD4 and Absolute Lymphocytes.

Peripheral blood in a lavender top (EDTA) tube (4-10 mL). 

Transport Container
The specimen must be received within 36 hours of collection. Do not centrifuge.

Transport Temperature
Room temperature within 36 hours.

Specimen Stability
Lavender (EDTA):  Room temperature: 36 hours; Refrigerated: Unacceptable;  Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
<85% Viability for Lymphocytic Subset panels; Centrifuged specimen.

Immunophenotyping by Flow Cytometry

Setup Schedule
Sunday - Saturday

Report Available
1-2 days

Laboratory test results should always be considered in the context of clinical observations. This test was developed and its performance characteristics determined by med fusion. It has not been cleared or approved by the U.S. Food and Drug Administration (FDA). The FDA has determined that such clearance or approval is not necessary. This test is used for clinical purposes. It should not be regarded as investigational for research. This laboratory is certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA) as qualified to perform high complexity clinical laboratory testing.

Reference Range
Age                CD4 Absolute   CD4 Percentage (%)
0-3 Months    1600-4000          35-64
3-6 Months    1800-4000          35-56
6-12 Months   1400-4300          31-56
1-2 Years        1300-3400          32-51
2-6 Years       700-2200           16-30
6-12 Years       650-1500           31-47
12-18 years      530-1300            31-52
Adult               490-1740              30-61
Absolute Lymphocytes     850-3900 cells/uL

Clinical Significance
The measurement of lymphocyte subsets may be useful in monitoring immunosuppressive therapies and determining the immune status of patients. These quantitative tests are measured out in absolute numbers which are determined from different cell types such as total T-cells, CD4 T-cells, CD8 T-cells, B-cells, and NK cells.  For example, CD4 counts are commonly used for monitoring HIV infected patients

Performing Laboratory
med fusion

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.