Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician). High concentrations of iodine may interfere with elemental testing. Abstinence from iodine-containing medications or contrast agents for at least 1 month prior to collecting specimens for elemental testing is recommended.
Specimen Collection Requirements
24-hour or random urine collection. Specimen must be collected in a plastic container. Refrigerate urine during and after collection, preserves specimens adequately, if tested within 14 days of collection.
Transfer aliquot from a well-mixed collection to Trace Element-Free Transport Tubes Record total volume and collection time interval on transport tube and on test request form.
Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine.
Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 1 year
Inductively Coupled Plasma/Mass Spectrometry
Copper, Urine (24-hour)
Copper per gram of creatinine
No reference interval (µg/g crt)
Thursday, January 14, 2016 01:37:37 PM