Zinc, Urine
0020462
Ordering Recommendation
Useful as an indicator of acute toxicity. May be useful as an indicator of deficiency in conjunction with Zinc, Serum or Plasma (0020097).
Mnemonic
ZINC U
Methodology
Quantitative Inductively Coupled Plasma-Mass Spectrometry
Performed
Mon-Sat
Reported
1-3 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
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.  
Collect
24-hour or random urine collection. Specimen must be collected in a plastic container. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately, if tested within 14 days of collection.  
Specimen Preparation
Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Transport Tubes (ARUP supply #43116). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 mL) Record total volume and collection time interval on transport tube and on test request form.  
Storage/Transport Temperature
Refrigerated. Also acceptable: Room temperature or frozen.  
Unacceptable Conditions
Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine.  
Remarks
  
Stability
Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 1 year  
Reference Interval
 
Test Number Components Reference Interval
 Zinc, Urine15-​120 µg/dL
 Zinc, Urine (24-​hour)150-​1200 µg/d
 Zinc per gram of creatinineNo reference interval (µg/g crt)
 Creatinine, Urine -​ per 24h  
 
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 mg/d
51-​80 years 800-​2100 mg/d 500-​1400 mg/d
81 years and older 600-​2000 mg/d 400-​1300 mg/d
Interpretive Data
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.  
Note
 
CPT Code(s)
84630
Components
Component Test Code*Component Chart Name
0020102Zinc, Urine - per volume
0020103Zinc, Urine - per 24h
0020207Creatinine, Urine - per volume
0020208Creatinine, Urine - per 24h
0025063Zinc, Urine - ratio to CRT
0097110Total Volume
0097111Hours Collected
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Normalized Urine Zinc
  • urine zinc concentration
  • Zinc/Creatinine Ratio, Random, Urine
  • Zn
  • Zn Urine
  • ZNU