Identifies and quantifies CD57+/CD3- NK cells.
Lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).
Transport 4 mL whole blood. (Min: 0.5 mL) Specimens must be analyzed within 72 hours of collection.
Room temperature. Also acceptable: Refrigerated.
Specimens older than 72 hours. Clotted or hemolyzed specimens.
Ambient: 72 hours; Refrigerated: 72 hours; Frozen: Unacceptable
|No||Percent CD57+CD3- (NK Cells)||1-16 percent of lymph|
|No||Abs CD57+CD3- (NK Cells)||21-357 cells/µL|
This test identifies and quantifies the CD57+/CD3- NK cells. The significance of low CD57+NK values in diagnosing and monitoring chronic Lyme disease is not well established and should be used in conjunction with other diagnostic tests specified in the Centers for Disease Control Lyme Disease case definition.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Analyte Specific Reagent (ASR)
|Component Test Code*||Component Chart Name||LOINC|
|2008913||% CD57+CD3- (NK Cells)||51286-3|
|2008914||Abs CD57+CD3- (NK Cells)||50640-2|