Specimen Requirements

Plasma and urine are required. Plasma specimen should preferably be obtained at mid-point of the 24-hour period of urine collection.

Specimen Type: Plasma

Container/Tube: Green top (lithium heparin)

Specimen Volume: 1 mL

Collection Instructions: Label specimen appropriately (plasma).

Additional Information: Patient’s height and weight and specimen type are required.

Specimen Type: Urine, 24 hour

Container/Tube: Plastic urine container

Specimen Volume: 10 mL

Collection Instructions:

1. No preservative.

2. Label specimen appropriately (urine).

Acceptable Preservatives:  Boric acid, 6N HCl, 50% Acetic acid

Additional Information:

1. Patient’s height and weight, 24-hour volume, and specimen type are required.

2. Follow instructions in Urine Collection in Special Instructions for timed specimens.