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.
Collection of urine specimens from patients receiving iodinated or gadolinium based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days past-contrast media exposure.
Collect 24 hour urine, refrigerate during collection. Mix well and send 8.0 mL urine (1.0 mL minimum) refrigerated in a blue-capped ARUP metal-free screw-capped plastic urine container. Please contract laboratory for metal-free screw-capped plastic vials. Specimens in other containers will be rejected. Record total volume on test requisition and specimen label.

Alternate Specimen
Random Urine

Rejection Criteria
Specimens contaminated with blood or fecal material. Specimens transported in non-trace element free transport tubes. Urine collected within 72 hours after administration of iodinated or gadolinium-based contrast media.

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:   0.0-5.0 ug/L  
Lead, Urine - per 24h:   0.0-8.1 ug/d  
Lead, Urine - ratio to CRT:   0.0-5.0 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