Heavy Metals Screen, 24-Hour Urine
Test Codes
EPIC: LAB6048, Beaker: XHMU, Mayo: HMU24
Department
Send Outs
Instructions
- Please refer to the Specimen Collection Manual for instructions on 24 Hour Urine Collection:
- 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.
- Patient should not eat seafood for a 48-hour period prior to start of, or during, collection.
Specimen Collection Criteria
Collect (preferred specimen): 24 hour urine sample with acceptable preservative.
Keep 24 hour urine specimen iced or refrigerated during collection.
- Include start and end dates and times for the collection period on the specimen container.
|
Urine Preservative Options
|
|
No Preservative
|
6N Hydrochloric Acid
(30 ml)
|
Boric Acid (10g)
|
Sodium Carbonate
|
50% Acetic Acid
|
|
Unacceptable
|
Acceptable
|
Unacceptable
|
Unacceptable
|
Acceptable
|
Physician Office/Draw Specimen Preparation
Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport.
Preparation for Courier Transport
Transport: Entire 24-hour urine collection, refrigerated (2-8°C or 36-46°F).
Rejection Criteria
Specimens not collected and processed as indicated.
In-Lab Processing
Measure total volume of 24-hour urine specimen. Record total volume and collection start and end dates and times in the LIS system. Aliquot 10.0 mL from the well-mixed preserved 24-hour urine collection (Minimum: 3.0 mL).
Storage
Specimen Stability for Testing:
Room Temperature (20-26°C or 68-78.8°F): unacceptable
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 7 days
Specimen Storage in Department Prior to Disposal:
Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.
Laboratory
Sent to Mayo Clinic Laboratories in Rochester, MN.
Performed
Monday – Friday.
Results available in 1 to 3 days.
Reference Range
By report.
Test Methodology
Quantitative Inductively Coupled Plasma / Mass Spectrometry.
Interpretation
By report.
Clinical Utility
Detecting arsenic, cadmium, mercury, and lead exposure and toxicity using 24-hour urine specimens
CPT Codes
82175, 82300, 83655, 83825.
Contacts
Send Outs Laboratory – RO
248-551-9045
Name: Send Outs Laboratory – RO
Location:
Phone: 248-551-9045
Last Updated
9/16/2023
Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.