||Quantitative High Performance Liquid Chromatography
#ExistPATIENTPREP>Patient Prep: Patient should fast overnight prior to specimen collection. Patient may have water. It is not necessary to discontinue nutritional supplements prior to this test.
#ExistCollect>Collect: Plasma separator tube, green (sodium or lithium heparin), serum separator tube, or plain red.
#ExistSPECIMENPREPARATION>Specimen Preparation: Protect from light within one hour of collection and during storage and shipment. Transfer 1 mL serum or plasma to an ARUP Amber Transport Tube. (Min: 0.3 mL)
#ExistSPECTRANSPORT>Storage/Transport Temperature: Frozen.
#ExistConditions>Unacceptable Conditions: Specimens other than heparinized plasma or serum. Hemolyzed specimens. Specimens exposed to repeated freeze/thaw cycles.
#ExistStability>Stability (collection to initiation of testing): After separation from cells: Ambient: Unacceptable; Refrigerated: 3 weeks; Frozen: 1 month