• 24-hour or random urine collection.
• Specimen must be collected in a plastic container and should be refrigerated during collection.

NOTE: ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately if tested within 14 days of collection.

Transfer an 8 mL aliquot of urine from a well-mixed collection to ARUP Trace Element-Free Transport Tubes.

Refrigerated. Also acceptable: room temperature or frozen.

Record total volume and collection time interval on transport tube and on test request form.

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

• Urine collected within 48 hours after administration of a gadolinium (Gd) 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).