Zinc Quantitative, Urine 
Mnemonic U ZN QT
CPT 84630†, 82570
Test Code 3528256
Synonyms Zn
Test Includes  
Specimen Urine (Random or 24 Hour)
Volume 5.0 mL
Container Plastic Urine Container, no preservatives
Special Instructions Do not allow specimen to contact glass or metal. For 24-hour urine, instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). If both urinalysis and metal testing are ordered, please submit a separate urine specimen (no additive) for the metal testing.
Specimen Prep No preservatives required. Preservatives used for routine analysis may contain mercuric oxide (ie, Stabilur), which interferes with all metal testing. Record total volume and collection time on requisition.
Storage Room Temperature
Transport Temp Room Temperature
Stability Rm Temp 14 days
Stability Refrig 14 days
Stability Frozen 14 days
Methodology Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Rejection Criteria   
Reference Value Environmental exposure: 100 - 900 µg/g creatinine, 150 - 1200 µg/24 hours 
Performed/TAT Tuesday - Friday   Reported in 3-7 days    
Comments Note 24 hour volume, if applicable. Total volume performed and charged as needed. Test used to evaluate zinc exposure.