Centralized Core Laboratory:Chemistry
Navy Blue top (EDTA) tube
2 mL (1.3 mL minimum)
Sent to reference lab
High Performance Liquid Chromatography
Collect immediately prior to next dose. Centrifuge and take off cells within 2 hours of collection. Avoid contact of blood with the rubber stopper.
If collected at an offsite location, send by a STAT Courier to Hospital lab (Akron or Beeghly).
Nortriptyline: 50-150 ng/mL Critical Value: greater than 500 ng/mL
Amitri/Nortriptyline: 125-250 ng/ml Critical Value: greater than 500 ng/mL
Amitriptyline; Nortriptyline; Total Amitrip/Nortriptyline