High Performance Liquid Chromatography (HPLC); Electrochemical Detection
Quest Diagnostics San Juan Capistrano
5-8 mL Blood
Dark Green (Sodium Heparin)
Patient should avoid alcohol, coffee, tea tobacco and strenuous exercise prior to collection. Overnight fasting is required. Patients should be relaxed in either a supine or upright position before blood is drawn. States of anxiety and stress can cause fluctuations in the catecholamine levels.
Room Temp: 6 Hours; Refrigerated: 6 Hours; Frozen: 30 Days
Thawed Plasma; Received room temperature; Received refrigerated; EDTA plasma
4 mL Plasma
2.5 mL Plasma
Plasma should be separated in a refrigerated centrifuge within 30 minutes of collection and then frozen immediately.
Dopamine, Epinephrine, Norepinephrine and Total Catecholamines (calculated)