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.

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.

Alternate Specimen

Random urine

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

Methodology

Inductively Coupled Plasma/Mass Spectrometry
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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
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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