Metanephrines, Urine METU
|Method(s)||Quantitative High Performance Liquid Chromatography/ Tandem Mass Spectrometry|
|Collect||24-hour urine or random urine. 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 to ARUP transport tube and adjust pH to 2.0-4.0 with 6M HCI (Min: 2.5 mL).
Ambient: Unacceptable; Refrigerated: 2 weeks (unpreserved); Frozen 1 month (preserved)
|Preferred Specimen Collection Device(s)|
24 Hour calculations (24-hour Urine)
Creatinine 24-Hour Urine
Ratio to Creatinine (CRT) Calculations (Random Urine)