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Metanephrines and 3-Methoxytyramine LC-MS/MS, Plasma

Test ID: FRMET P
Test
Specimen
Performance / Interpretation
Interface / Setup

Test

Aliases/Synonyms

Fractionated metanephrines

Method

LC-MS/MS

Report Includes

Metanephrine; Normetanephrine; 3-Methoxytyramine

Specimens

Plasma (EDTA)

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

7-Mar-2023

Specimen

Specimens

Plasma (EDTA)

Sample Volume

1 mL

Patient Preparation

The following patient preparation is recommended but not mandatory.
  • Overnight fasting
  • Abstaining from smoking tobacco for at least 4 hours prior to collection
  • Resting in the supine position for 15 minutes before and during collection
  • If epi pen is given, wait for 24 hours before collection.

    • Collection & Handling

    Handling Information

    Separate within 2 hours of collection. Store and send frozen.

    Stability

    Refrigerated 7 days
    Frozen Up to 1 year

    Rejection Criteria

    Specimen Serum
    Hemolysis Gross

    Test Version

    7-Mar-2023

    Performance / Interpretation

    Method

    LC-MS/MS

    Turnaround Time

    10 days

    Results

    Name Units Reference Range Conversion Factor
    Metanephrine nmol/L
    • < 0.50
    Normetanephrine nmol/L
    • < 0.90
    3-Methoxytyramine nmol/L
    • < 0.30

    Test Location

    St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

    Test Version

    7-Mar-2023

    Interface / Setup

    HL7 Interface Codes

    Order Code Result Codes Units
    FRMET P 62896Metanephrine, plasma nmol/L
    62897Normetanephrine, plasma nmol/L
    628983-Methoxytyramine, plasma nmol/L

    Test Version

    7-Mar-2023