Specimen Requirements

Plasma or serum and urine are required for this test. Blood should be drawn during 24-hour urine collection period.

Submit only 1 of the following blood specimens:
 
Plasma
Draw blood in a green-top (lithium heparin) plasma gel tube(s). Spin down and send 1 mL of lithium heparin plasma refrigerated.
Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
 
Serum
Draw blood in a serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

Unspun blood specimens must be transported at ambient temperature and arrive to the laboratory within one hour of draw.

Urine
10 mL from a well-mixed, 24-hour urine collection. No preservative. Refrigerate specimen during collection, and send specimen refrigerated.  The entire 24-hour urine collection can also be submitted.
Note:  1. 24-Hour volume is required on request form for processing.
2. Follow instructions in “Urine Collection” in “Special Instructions.”