Specimen Requirements

Serum and urine are required for this test. Blood specimen should preferably be drawn at the mid-point of the 24-hour period of urine collection but will be accepted if drawn within 24 hours before or after urine collection.

Serum or Plasma
Draw blood in a plain, red-top tube(s), serum gel tube(s), or green top tube(s). Spin down and send 1 mL of serum refrigerated.
Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

Urine
10 mL from a 24-hour urine collection in a plastic, screw-capped urine container supplied. No preservative. Refrigerate specimen during collection, and send specimen refrigerated.
Note:  1. Patient’s height and weight and 24-hour volume are required on request form for processing.

2. Indicate urine on request form.
3. Label specimen appropriately (urine).