Specimen:
Collect
- Timed Urine in One Timed Urine Container
Also Acceptable:
- Random Urine in One Sterile Specimen Container
Submit
- 4 mL (Min:3 mL) Timed Urine in Sterile Specimen Container. Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 4 mL (Min:3 mL) Random Urine in Sterile Specimen Container. Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- If possible, abstain from medications for 72 hours prior to collection.
Thoroughly mix entire collection (24-hour or Random) in one container. Transfer a 4 mL aliquot to an Standard Transport Tube. Adjust pH to 2.0-4.0 with 6M HCl. (Min: 2.5 mL) A pH lower than 2 can cause assay interference. Record total volume and collection time interval on transport tube and test request form.
Specimen preservation can be extended to 1 month refrigerated by performing one of the following:
Option 1: Transfer a 4 mL aliquot (Min: 2.5 mL) to an Standard Transport Tube. Adjust pH to 2.0-4.0 with 6M HCl.
Option 2: Transfer a 4 mL aliquot (Min: 2.5 mL) to an Standard Transport Tube containing 20 mg sulfamic acid.
Rejection Criteria
- Specimens preserved with boric acid or acetic acid.
Stability
Ambient: Unacceptable; Refrigerated: 2 Week(s); Frozen: 1 Month(s); Incubated: Unacceptable
Methodology
- Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun-Sat
Reported
2-6 Day(s)
CPT Codes
- 83835
Interpretive Data
Please see report for interpretive data.
Components
- 93518 - HOURS COLLECTED
- 93388 - URINE VOLUME
- 90079 - METANEPHRINE
- 90088 - NORMETANEPHRINE
- 90089 - METANEPHRINE
- 90096 - METANEPHRINE
- 90097 - NORMETANEPHRINE
- 90098 - NORMETANEPHRINE
- 93610 - INTERPRETATION
- 93008 - CREAT, UR
- 93009 - CREATININE
Last Updated: November 6, 2024 @ 10:13 am
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