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CATECHOLAMINES, PLASMA FRACTIONATED

Mnemonic

CATE PF

Synonym

Adrenaline - Dopamine - Epinephrine - Noradrenaline - Norepinephrine

Guidelines

Medications which may interfere with catecholamines and metabolites include amphetamines and amphetamine-like compounds, appetite suppressants, bromocriptine, buspirone, caffeine, carbidopa-levodopa (Sinemet®), clonidine, dexamethasone, diuretics (in doses sufficient to deplete sodium), ethanol, isoproterenol, labetalol, methyldopa (Aldomet®), MAO inhibitors, nicotine, nose drops, propafenone (Rythmol), reserpine, theophylline, tricyclic antidepressants, and vasodilators. The effects of drugs on catecholamine results may not be predictable.

Specimen Collection Requirements

Patient Preparation

Patient should be calm and in a supine position for 30 minutes before collection.

Collect

Plasma, two green (sodium or lithium heparin) top tubes, collect on ice

Handling

Specimen should be centrifuged and frozen within one hour, refrigerated centrifuge is preferred but not required. Separate specimens must be submitted when multiple tests are ordered

Minimum Volume

2.1 mL

Transport

Frozen

Rejection Criteria

Refrigerated, EDTA plasma, serum or urine specimens.

Stability

AFTER SEPARATION FROM CELLS: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen (-20°C): 1 month, (-70°C) up to 1 year

Testing Information

Performed

Tue - Sun

Reported

3-5 days

Method

High Performance Liquid Chromatography

Referral Lab

Mayo Medical Laboratory (CEAPC)

Reference Values

Reference Values

Interpretation provided.

Comments

Children, particularly those under 2 years of age, often show an elevated catecholamine response to stress.

CPT Codes

82384

Last Updated: Monday, September 25, 2017 12:50:39 PM


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