LEAD, URINE, QUANTITATIVE

Specimen Required
Patient Preparation: Patients should be encouraged to discontinue vitamins, nutritional supplements and nonessential over-the-counter medications prior to specimen collection. High concentrations of iodine may interfere with elemental testing. Abstinence from iodine-containing medications or contrast agents is recommended at least 1 month before sample collection.
Collect 24 hour urine, refrigerate during collection. Mix well and send 8.0 mL urine (1.0 mL minimum) refrigerated in an IATA-approved metal-free screw-capped plastic urine container. Please contact laboratory for metal-free screw-capped plastic vials. Specimens in other containers will be rejected. Record total volume on test requisition and specimen label.
A completed lead requisition must accompany sample.

Alternate Specimen
Random Urine

Rejection Criteria
Urine collected within 48 hours after gadolinium administration.

Methodology
Quantitative Inductively Coupled Plasma/Mass Spectrometry

Stability
Room Temperature: 7 days; Refrigerated (preferred): 14 days; Frozen: 1 year

Reference Range
Lead, Urine - per volume:   0.0-1.4 ug/L  
Lead, Urine - per 24h:   0.0-8.1 ug/d  
Lead, Urine - ratio to CRT:   0.0-1.4 ug/g CRT  
Creatinine, Urine - per 24h:   By report  

Performed
Monday-Saturday

Turnaround Time3-5 days
Test CodeUPBA
CPT-4 Code (s)
83655
LOINC Codes
Collection Length:   30211-7  
Total Volume:   19153-6  
Lead, Urine - ug/L:   20625-0  
Lead, Urine - ug/day:   5677-0  
Lead, Urine - ug/g crt:   29943-8  
Creatinine, Urine - mg/dL   2161-8  
Creatinine, Urine - mg/day:   2162-6  

Warde
Medical
Laboratory