Zinc, Plasma 
Mnemonic ZN
CPT 84630†
Test Code 3508495
Synonyms Zn
Test Includes  
Specimen Plasma
Volume 2.0 mL
Container Royal Blue Top (EDTA) Tube
Special Instructions  
Specimen Prep Separate plasma from cells within 2 hours of collection. Transfer to a certified metal-free transport tube for shipment to the laboratory.
Storage Refrigerate
Transport Temp Room Temperature
Stability Rm Temp Acceptable
Stability Refrig Acceptable
Stability Frozen Acceptable
Methodology Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Rejection Criteria Gel-barrier tube; unspun red top; refrigerated specimens 
Reference Value 60 - 120 ug/dL 
Performed/TAT Monday - Sunday   Reported in 3-5 days    
Comments Test used to evaluate zinc exposure.