T Cell Fx™-Select
Cell Function Testing requires special attention to specimen collection and shipping in order to ensure the integrity of the sample. Please watch Viracor’s video for complete specimen collection and shipping instructions.
The test measures the T cell responses to antigens of common infections as well as to mitogens, allowing detection of deficiencies in this arm of the immune response. Patients with primary immunodeficiency may have deficits in the acquired T-cell response. It is useful for the following types of patients: Immune deficiency, Recurrent infection, Evaluation of cell-mediated immunity and monitoring immunosuppression (e.g. Transplant patients).
ProcedurePeripheral blood mononuclear cells are stimulated with mitogens or antigens or left unstimulated as a negative control and incubated at 37ºC. During the incubation Brefeldin A is added, causing the interferon (IFN)-gamma to be retained inside the cell. Following the stimulation phase, cells are recovered, stained for surface markers (CD45, CD3, and CD69 and intracellular IFN-gamma, and analyzed by flow cytometry. This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.
2-3 business days from receipt of specimen
| Specimen Type | Test Code | CPT Code | NY Approved | Volume | Assay Range | Special Instructions |
|---|---|---|---|---|---|---|
| whole blood | 403065P | 86353 x 2 | No | 8 mL |
Varies by antigen/mitogen |
|
Specimens are approved for testing in New York only when indicated in the Specimen Information field above.
The CPT codes provided are based on Eurofins Viracor's interpretation of the American Medical Association's Current Procedural Terminology (CPT) codes and are provided for general informational purposes only. CPT coding is the sole responsibility of the billing party. Questions regarding coding should be addressed to your local Medicare carrier. Eurofins Viracor assumes no responsibility for billing errors due to reliance on the CPT codes illustrated in this material.