Test Details
Mnemonic
UMERA
Ordering Code
3671570
CPT-4 Code(s)
83825
Specimen Information
Patient Preparation
Patients should be encouraged to discontinue vitamins, nutritional supplements and nonessential over-the-counter medications prior to specimen collection and avoid shellfish and seafood for 48-72 hours. 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.
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 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
Specimen Preparation
Mix well and send 8.0 mL urine in a blue-capped ARUP metal-free screw capped plastic vial. Please contact lab for metal-free screw capped plastic vials. Specimens in other containers will be rejected. Record total volume on test requisition and specimen label.
Minimum Volume
1.0 mL
Transport Temperature
Refrigerated
Rejection Criteria
Acid preserved urines. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element free transport tube. Urine collected within 72 hours after administration of iodinated or gadolinium-based contrast media.
Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 1 year
Refrigerated: 14 days
Frozen: 1 year
Methodology
Inductively Coupled Plasma/Mass Spectrometry
Reference Range
Mercury, Urine - per volume: 0.0 - 5.0 ug/L
Mercury, Urine - per 24h: 0.0 - 23.0 ug/d
Mercury, Urine -ratio to CRT: 0.0 - 20.0 ug/g CRT
Creatinine, Urine - per 24h: See report
Mercury, Urine - per 24h: 0.0 - 23.0 ug/d
Mercury, Urine -ratio to CRT: 0.0 - 20.0 ug/g CRT
Creatinine, Urine - per 24h: See report
Performing Laboratory
ARUP
New York DOH Approval Status
Yes