Specimen Requirements

Submit only 1 of the following specimens:

Plasma

Container/Tube: Mint-top (lithium heparin) tube

Specimen Volume: 1 mL of plasma

Collection Instructions:

Trough: Draw immediately before next dose.

Peak: 12 hours after and evening dose or 9 hours after a morning dose.

Note:

1. Indicate plasma.

2. Label specimen appropriately (plasma).

Serum

Container/Tube: Serum gel tube

Specimen Volume: 1 mL of serum

Collection Instructions:

Trough: Draw immediately before next dose.

Peak: 12 hours after and evening dose or 9 hours after a morning dose.

Note: 

1. Indicate serum.

2. Label specimen appropriately (serum).