NORTI – “Nortriptyline”

Update to specimen requirements, alternate specimen, stability, and reference range.

Specimen Preparation: Centrifuge, separate serum from cells within 2 hours and send 1.0 mL serum in a screw capped plastic vial.

Minimum Volume: 1.0 mL

Alternate Specimen: No alternate specimen listing.

Stability: Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 14 days

Reference Range:

Therapeutic range: 50 – 140 ng/mL
Toxic: >500 ng/mL