Zinc is predominantly eliminated in the feces. ELEVATED urine zinc may suggest excessive zinc supplementation but should be interpreted with a corresponding serum zinc concentration. REDUCED urinary levels reflect zinc deficiency. See Zinc, Serum
State 24 Hrs urine volume 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). Collection from patients receiving iodinated or gadolinium-based contrast media must be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure.
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