DOPAMINE, PLASMA

Specimen Required
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. Draw blood in a pre-chilled green sodium heparin tube. Plasma should be separated in a refrigerated centrifuge within 30 minutes of collection and then frozen immediately at -20 degrees C ina screw-capped plastic vial. Send 4.0 mL plasma (2.0 mL minimum) frozen in a plastic screw-capped vial.

Alternate Specimen
Plasma: Lithium heparin

Rejection Criteria
EDTA plasma, samples received not frozen.

Methodology
Chomatography

Stability
Room temperature: 6 hours; Refrigerated: 6 hours; Frozen: 30 days

Reference Range
By report

Performed
Monday-Friday

Turnaround Time5-8 days
Test CodeDOP
CPT-4 Code (s)
82542
LOINC Codes
2216-0

Warde
Medical
Laboratory