Sample Requirements:
Lavender top (EDTA), chilled and centrifuged
Purpose:
Helps diagnose pheochromocytoma or neuroblastoma.
High Levels:
May indicate pheochromocytoma, stress, or stimulant use.
Low Levels:
Usually not clinically significant.
Reference Range:
Epinephrine: <50 pg/mL; Norepinephrine: <600 pg/mL