Laboratory Test DirectoryShare
|Methodology:||Quantitative Liquid Chromatography-Tandem Mass Spectrometry|
Patient Preparation: Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration.
Collect: Plain Red OR Lavender (K2 or K3EDTA) - 2 ml serum or plasma.
Specimen Preparation: Separate serum or plasma from cells within 2 hours of collection. Transport serum or plasma in a Standard Transfer Tube.
Storage/Transport Temperature: CRITICAL FROZEN.
Separate specimens must be submitted when multiple tests are ordered. Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).
Stability: After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 week
NOTE: * This test is approved for all states. *
|CPT Code(s):||80342; (Alt code: 80299)|