Test Details
Mnemonic
DOP
Ordering Code
3501425
CPT-4 Code(s)
82542
Specimen Information
Patient Preparation
Patients should be relaxed in either a supine or upright position before blood in drawn. States of anxiety and stress can cause fluctuations in the catecholamine levels. Patient should avoid alcohol, coffee, tea, tobacco and strenuous exercise prior to collection. Overnight fast is preferred.
Collect
Green sodium heparin (pre-chilled)
Specimen Preparation
Plasma should be separated in a refrigerated centrifuge within 30 minutes of collection and then frozen immediately at -20°C in a screw capped plastic vial. Send 2.0 mL plasma frozen in a plastic screw capped vial.
Alternate Specimen
Lavender EDTA
Minimum Volume
1.0 mL
Transport Temperature
Frozen
Rejection Criteria
Gross hemolysis
Stability
Room temperature: 6 hours
Refrigerated: 6 hours
Frozen: 31 days
Refrigerated: 6 hours
Frozen: 31 days
Methodology
Liquid Chromatography Mass Spectrometry
Reference Range
<18 years: No reference range available
> or = 18 years: Supine: <16 pg/mL
Upright: <27 pg/mL
> or = 18 years: Supine: <16 pg/mL
Upright: <27 pg/mL
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes