norepinephrine in plasma

Reference interval

• 110-410 pg/mL (650-2423 pmol/L) {supine}

Increases

• associated with neurochromaffin tumors
  • pheochromocytoma
  • paraganglioma
  • neuroblastoma
• anxiety
• intense physical exercise

Decreases

• autonomic neuroapathies
  • diabetes mellitus
  • parkinsonism
  • orthostatic hypotension

Specimen

• plasma (heparin or EDTA)
• chill specimen immediately in ice water
• separate plasma in refrigerated centrifuge within 30 minutes of collection
• freeze immediately at -20 degrees C in plastic vials
• stable for 8 months at -70 degrees C

More general terms

• catecholamines in plasma
• norepinephrine in body fluid

More specific terms

• norepinephrine in plasma standing
• norepinephrine in plasma supine

Additional terms

• norepinephrine; noradrenaline (Levophed)