Specimen Required
Patient Preparation: Patients should be encouraged to discontinue vitamins, nutritional supplements and non-essential over-the-counter medications before 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 post-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 vial. Please contact laboratory for metal-free screw-capped plastic vial. Specimen in other containers will be rejected. Record total volume on test requisition and specimen label.

Alternate Specimen
Random urine

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

Quantitatively Inductively Coupled Plasma/Mass Spectrometry

Room Temperature: 7 days; Refrigerated: 14 days; Frozen: 1 year

Reference Range
Thallium, Urine - per volume:   0.0-2.0 ug/L  
Thallium, Urine (24-hour):   0.0-0.4 ug/d  
Thallium, Urine-ratio to CRT:   0.0-2.0 ug/g CRT  
Creatinine, 24-hour urine:   By report  


Turnaround Time3-6 days
Test CodeUTHAL
CPT-4 Code (s)
Creatinine, Urine - per volume   2161-8  
Thallium, Urine - per 24th   5746-3  
Total Volume   19153-6  
Thallium, Urine - ratio to CRT   29938-8  
Creatinine, Urine - per 24h   2162-6  
Hours Collected   30211-7  
Thallium, Urine - per volume   21558-2