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Metanephrines Fractionated, Urine

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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