ZINC, URINE

Specimen Required
Patient preparation: Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications. High concentrations of iodine or gadolinium may interfere with elemental testing. Collection from patients receiving iodinated or gadolinium-based contrast media must be avoided for a minimum of 72 hours post-exposure. Colleciton from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure.
Collect 24 hour urine, refrigerate during colleciton. Mix well, and send 8.0 mL urine (1.0 mL minimum) refrigerated in blue-capped ARUP metal-free screw-capped plastic vial. Please contact laboratory for metal-free screw-capped plastic vials. Specimens in other containers will be rejected.

Alternate Specimen
Random urine

Rejection Criteria
Acid preserved urine, urine collected within 48 hours of iodinated or gadolinium-based contrast media. Specimens contaminated iwht blood or fecal material.

Methodology
Quantitative Inductively Coupled Plasma - Mass Spectrometry

Stability
Room temperature: 7 days; Refrigerated: 14 days; Frozen: 1 year

Reference Range
Zinc, urine:   15-120 µg/dL  
Zinc, urine (24-hour):   150-1200 µg/d  
Zinc per gram of creatinine:   No reference interval (µg/g crt)  
Creatinine, urine - per 24th:
   Age   Male   Female  
   3-8 years   140-700 mg/d   140-700 mg/d  
   9-12 years   300-1300 mg/d   300-1300 mg/d  
   13-17 years   500-2300 mg/d   400-1600 mg/d  
   18-50 years   1000-2500 mg/d   700-1600 md/d  
   51-80 years   800-2100 mg/d   500-1400 mg/d  
   81 years and older   600-2000 mg/d   400-1300 mg/d  

Performed
Monday-Saturday

Turnaround Time3-6 days
Test CodeUZINC
CPT-4 Code (s)
84630
LOINC Codes
Zinc, urine - per volume:   21610-1  
Zinc, urine - per 24h:   5765-3  
Creatinine, urine - per volume:   2161-8  
Creatinine, uirne - per 24th:   2162-6  
Zinc, urine - ratio to CRT:   27201-3  
Total volume:   19153-6  
Hours collected:   30211-7  

Warde
Medical
Laboratory