24-hour or random urine collection.

Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Tubes (Min: 1 mL). Refrigerated.

Patient Preparation:

Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications for 48 hours (upon the advice of their physician). In addition, the administration of iodine-based contrast media and drugs containing Iodine may yield elevated results. Specimen must be collected in a plastic container and should be refrigerated after collection.

Ambient: 2 months; Refrigerated: 2 months; Frozen: 2 months

Specimens not received in Trace Element-Free tubes. Urine collected within 72 hours after administration of a gadolinium (Gd) or iodine (I) containing contrast media (may occur with MRI studies). Acid preserved urine. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element-free transport tube (with the exception of the original device).