Test Overview
Test Methodology

Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

Test Usage

Preferred screening test for detection of arsenic exposure in 24-hour urine specimens.

Reference Range *

<18 mcg/24 hour

Test Details
Days Set Up
Monday - Saturday
Analytic Time

2 - 4 days

Soft Order Code
MASU
MiChart Code
Arsenic, urine, 24 hour
Synonyms
  • As, Urine
  • ARSENIC, URINE
  • ARU24
  • ARU24-CONC
  • ARSENIC, URINE 24 HOUR
  • CONCENTRATION
Laboratory
Sendout
Reference Laboratory
Mayo ASU24
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect 24 hour urine in a clean, plastic container with no metal cap or glued insert and no preservative. Aliquot urine into a clean, plastic container with no metal cap or glued insert and refrigerate within 4 hours of completion of collection. Record 24 hour urine volume and collection dates/times on the request form. Patient should not eat seafood for a 48 hour period prior to start of collection. Collection must take place prior to or 48 hours after administering gadolinium-containing contrast media.

Contraindications
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.
Normal Volume
10 ml aliquot of 24 hour urine collection
Minimum Volume
3 ml aliquot of 24 hour urine collection
Additional Information

If arsenic concentration is 35 mcg/L or greater, then fractionation (MASFR) will be performed at an additional charge. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated. Test sent to Mayo Medical Laboratories.

Billing
CPT Code
82175
Fee Code
33207
Reflex CPT
82175
Reflex Fee Code
32111
LOINC
5587-1