Test Details
Mnemonic
UMERR
Ordering Code
3600396
CPT-4 Code(s)
83825
Specimen Information
Patient Preparation
Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48 to 72 hours. 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.
Collection from patients with impaired kidney function should be avoided for a minimum of 14
days post-contrast media exposure.
Collect
Random urine
Specimen Preparation
Mix well and send 8.0 mL urine in a blue-capped ARUP metal-free screw capped plastic vial. Please contact laboratory for metal-free screw capped plastic vials. Specimens in other containers will be rejected.
Minimum Volume
1.0 mL
Transport Temperature
Refrigerated
Rejection Criteria
Urine collected within 72 hours after administration of iodinated or gadolinium-based contrast media. Acid preserved urine. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element free transport tube.
Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 1 year
Refrigerated: 14 days
Frozen: 1 year
Methodology
Quantitative Inductively Coupled Plasma-Mass Spectrometry
Reference Range
Mercury, Urine - per volume 0.0-5.0 μg/L
Mercury, Urine - ratio to CRT 0.0-20.0 μg/gCRT
Mercury, Urine - ratio to CRT 0.0-20.0 μg/gCRT
Performing Laboratory
ARUP
New York DOH Approval Status
Yes