Lab Test

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Arsenic, Random Urine

Test Codes

EPIC: LAB7867, Beaker: XASRU, Mayo: SPAS

Department

Send Outs

Instructions

  • Patient should not eat seafood for a 48-hour period prior to start of 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.

Specimen Collection Criteria

Collect (preferred specimen): 5.0 mL random urine specimen in a screw-capped container (preferred) or other sterile collection cup. (Minimum: 3.0 mL)

Physician Office/Draw Specimen Preparation

Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport.

Preparation for Courier Transport

Transport: 5.0 mL random urine, refrigerated (2-8°C or 36-46°F). (Minimum: 3.0 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport.

Transport: 5.0 mL random urine, refrigerated (2-8°C or 36-46°F). (Minimum: 3.0 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 72 hours
Refrigerated (2-8°C or 36-46°F): 28 days
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Out Laboratory with any questions.

Laboratory

Sent to Mayo Clinic Laboratories in Rochester, MN.

Performed

Monday – Friday.
Results available within 3-5 days.

Reference Range

By report.

Test Methodology

Ion Chromatography Extraction/Inductively Coupled Plasma-Mass Spectrometry (IC-ICP-MS).

Interpretation

By report.

Clinical Utility

This assay is used to evaluate arsenic toxicity.

CPT Codes

82175

Contacts

Last Updated

10/20/2023

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