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Gadolinium, 24 HR, Urine
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
GDU
CPT Codes
83018
Preferred Specimen
3 mL Urine from a 24 HR collection
Patient Preparation
Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Minimum Volume
0.3 mL
Instructions
24-Hour volume is required.
Collect urine for 24 hours in a non-metal collection container. Refrigerate specimen within 4 hours of completion of 24-hour collection. Aliquot urine into a non-metal plastic vial.
Collect urine for 24 hours in a non-metal collection container. Refrigerate specimen within 4 hours of completion of 24-hour collection. Aliquot urine into a non-metal plastic vial.
Transport Container
Plastic Vial
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: 28 Days
Refrigerated: 28 Days
Frozen: 28 Days
Refrigerated: 28 Days
Frozen: 28 Days
Methodology
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
Setup Schedule
Thursday
Report Available
1 - 7 days
Clinical Significance
Assessing chronic exposure and monitoring effectiveness of dialysis in a 24-hour urine collection
Performing Laboratory
MAYO CLINIC LABORATORIES
3050 SUPERIOR DR NW
ROCHESTER, MN 55901
Last Updated: November 19, 2021
