CHROMIUM, URINE

Mnemonic

CHRU

Specimen Collection Requirements

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). High concentrations of iodine may interfere with elemental testing. Abstain from iodine containing medications or contrast agents for at least 1 month prior to collection of specimen.

Collect

Urine, 24-hour or random urine collection

Handling

Specimen must be collected in a plastic container. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately if tested within 14 days of collection. Transfer 8 mL aliquot from a well-mixed collection to Trace Element-Free Transport Tubes. Available through Legacy Client Services. (Min: 2 mL)

Preferred Volume

10.0 mL

Minimum Volume

1.0 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element-free transport tube (with the exception of the original device).

Stability

Ambient: 1 week; Refrigerated (preferred): 2 weeks; Frozen: 1 year

Testing Information

Performed

Tue, Fri

Reported

3-5 days

Method

Inductively Coupled Plasma/Mass Spectrometry

Referral Lab

ARUP (25068)

Reference Values

Reference Values

Chromium Urine Random:    0.0-5.0 µg/L
Chromium 24 Hour:    0.0-6.0 µg/day
Creatinine:     By report.

CPT Codes

82495

Last Updated: Thursday, January 5, 2017 03:42:03 AM