Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed:
Tue, Fri
Reported:
1-5 days
Specimen Required:
Patient Prep: Measure at least two weeks after initiating treatment.
Collect: Plain red. Also acceptable: Lavender (K2 or K3EDTA) or pink (K2 EDTA).
Specimen Preparation: Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).
Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 1 week; Frozen: 1 month (avoid repeated freeze/thaw cycles)
