ARUP's Laboratory Test Directory

Cell-Mediated Immune Function Screen : 0051273

Mnemonic: LMPS

Methodology: Cell Culture/Quantitative Chemiluminescent Immunoassay
Performed: Mon-Sun
Reported: 1-2 days
Specimen Required: Collect: Green (sodium heparin). Specimen must be collected within 30 hours of test performance.

Specimen Preparation: Transport 3 mL whole blood in original collection tube. (Min: 0.5 mL) LIVE LYMPHOCYTES REQUIRED.

Storage/Transport Temperature: CRITICAL ROOM TEMPERATURE. Do not refrigerate or freeze.

Unacceptable Conditions: Refrigerated or frozen specimens. Specimens older than 30 hours.

Stability (collection to initiation of testing): Ambient: 30 hours; Refrigerated: Unacceptable; Frozen: Unacceptable
Reference Interval:
Effective May 16, 2011

226-524 ng/mL
Interpretive Data: This assay quantifies the concentration of adenosine triphosphate (ATP) produced by circulating immune cells in response to phytohemagglutinin-L (PHA-L) stimulation. This assay does not directly quantify the level of immunosuppression.

See Compliance Statement B: www.aruplab.com/CS
 
ATP Level Result Interpretation
225 ng/mL or lower Low The patient's circulating immune cells are showing low response to PHA-L stimulation.
226-524 ng/mL Moderate The patient's circulating immune cells are showing moderate response to PHA-L stimulation.
525 ng/mL or greater Strong The patient's circulating immune cells are showing strong response to PHA-L stimulation.

Note: This assay is performed using the ImmuKnow™ Immune Cell Function Assay.
CPT Code(s): 86352
Cross References: Immune Cell Function Assay (Cell-Mediated Immune Function Screen)