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Laboratory Medicine

Test catalogue

Catecholamines, Plasma

Test Name

Catecholamines, Plasma (Epinephrine, Norepinephrine)

Lavender Tube Specimen Type / Requirements

Container Type = 2 Lavenders

Minimum Volume = 3mL Plasma (EDTA)

Tubes must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect Sample in pre-chilled lavender top. Patient must be supine for at least 30 minutes prior to and during specimen collection. Collect after overnight fast (water and non-caffeinated drinks permissible). Catechol drugs may interfere, including alpha methyldopa, alpha-methyl-para-tyrosine, isoproteronal, dobutamine and carbidopa. Provide list of medications. Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions Specimen should be kept cold and spun in a cold centrifuge as soon as possible, within 60 minutes of collection. Freeze immediately. If the specimen thaws, it is unsuitable for analysis

Stability: Stable frozen for one week.

Rejection Criteria: Serum, unlabeled, not-frozen or sample of non sufficient quantily.

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

10 Days

Test Utilization

Routine > 10 Days

Reference Value

Norepinephrine Plasma: 0.8 - 3.4 nmol/L

Epinephrine Plasma: < 0.8 nmol/L

Test Code




Testing Location

Referred Out – ON, Canada (ROICL02)

Other Information

Last Updated: April 27, 2020