Catecholamines Fractionated by LC-MS/MS, Urine Free CATU
|Method(s)||Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry|
|Collect||24-hour or random urine collection. Refrigerate during collection.|
Thoroughly mix entire collection in one container. Freeze specimen immediately after aliquoting. Do not exceed 4 mL in tubes.
Preserved: Transfer 4 mL to ARUP Transport tube with 20 mg Sulfamic Acid. Mix well (Min: 2.5 mL).
Alternative: If ARUP tube with Sulfamic Acid is not available, transfer 4 mL (Min: 2.5 mL) to ARUP Transport tube and adjust pH to 2.0-4.0 with 6M HCI.
Collection to initiation of testing: Unpreserved - Ambient: Unacceptable; Refrigerated: 1 week; Frozen: Undefined. Preserved - Ambient: Unacceptable, Refrigerated: 1 month, Frozen: 6 months
Room temperature specimens. Specimens with pH greater than 7.
|Preferred Specimen Collection Device(s)|
See Laboratory Report