Arsenic, Urine 24 Hr




Test Mnemonic

UARSND

CPT Codes

  • 82175 - QTY (1)

Includes

  • Arsenic, Urine - per volume
  • Arsenic, Urine - per 24h
  • Arsenic, Urine - ratio to CRT
  • Arsenic, Ur Fractionated (if indicated)
  • Hours Collected
  • Total Volume
  • Creatinine, Urine - per volume
  • Creatinine, Urine - per 24h

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
8 mLUrine, 24-hour (well-mixed)Plastic containerRefrigerate during collection.RefrigeratedHEAVY METALS FORM REQUIRED to meet State Health Department requirements. Patient Prep: High concentrations of iodine may interfere with testing. Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, non-essential over-the-counter medications (upon the advice of their physician) and avoid seafood for 48 hours. Avoid iodinated or gadolinium-based contrast media for at least 72 hours or 14 days for patients with impaired kidney function. Collection: Collect in a plastic container, mix well and aliquot into a trace metal free transport tube (ARUP #43116). Record total volume and collection time interval on specimen.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mL     

Stability

Environmental Condition Description
Ambient1 week
Refrigerated2 weeks
Frozen2 months

Days Performed

Sun - Sat

Turnaround Time

2 - 6 days

Methodology

Name Description
High Performance Liquid Chromatography (HPLC) 
Inductively Coupled Plasma / Mass Spectrometry (ICP-MS) 

Reference Range

Arsenic - per volume (ug/L)
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormalLess than or equal to 34.9 (Based on Biological Exposure Index)ug/L
Arsenic - per24h (ug/day)
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormalLess than or equal to 49.9ug/d
Arsenic - ratio to CRT (ug/g CRT)
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormalLess than or equal to 29.9ug/g crt

Special Info

HEAVY METALS FORM REQUIRED to meet State Health Department requirements. Patient Prep: High concentrations of iodine may interfere with testing. Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, non-essential over-the-counter medications (upon the advice of their physician) and avoid seafood for 48 hours. Avoid iodinated or gadolinium-based contrast media for at least 72 hours or 14 days for patients with impaired kidney function. Collection: Collect in a plastic container, mix well and aliquot into a trace metal free transport tube (ARUP #43116). Record total volume and collection time interval on specimen. Urine transported in a non-trace element-free tube or contaminated with iodine, gadolinium, blood, fecal material or acid preservative will be rejected. This test is New York DOH approved.

Clinical Info

This test is useful for the assessment of acute or chronic arsenic exposure. The ACGIH Biological Exposure Index (BEI) for arsenic in urine is 35 μg/L. The ACGIH BEI is based on the sum of inorganic and methylated species. For specimens with elevated total arsenic results, fractionation is automatically performed at additional cost to determine the proportions of inorganic, methylated and organic species. Per 24h calculations are provided to aid interpretation for collections with a duration of 24 hours and an average daily urine volume. For specimens with notable deviations in collection time or volume, ratios of analytes to a corresponding urine creatinine concentration may assist in result interpretation

Requisition

Reflex Tests

The following additional test(s) may be ordered depending on results: