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Test ID: INARS U

Arsenic – Inorganic, 24 hr Urine

Test Overview

Clinical Utility

Inorganic Arsenic includes inorganic, mono- and di-methylated species, correlating with occupational and environmental exposure. Organic Arsenic, including tri-methylated species such as Arsenobetaine is not measured. When Arsenic is ordered, unless Inorganic is specified, a Total Arsenic will be performed and billed, with Inorganic Arsenic performed and billed in addition when the Total Arsenic is elevated.

Method

High resolution sector field inductively coupled plasma-mass spectrometry (HR-SF-ICP-MS)

Result Included

Creatinine (mmol/L); Creatinine (mmol/d); Arsenic (µg/L); Arsenic (µmol/L); Arsenic (µg/d); Arsenic (µmol/d)

Specimen

Specimen Type

Urine (24 hr)

Volume

Sample Volume

10.0 mL

Minimum Volume

5.0 mL

Patient Preparation

Avoid seafood consumption for five days prior to collection.

Collection & Handling

Collection Instructions

Collect in metal-free container.

Handling Information

Transfer in metal-free container.

Additional Information

Provide collection date, 24 hour volume and gender.

Stability

Ambient Refrigerated Frozen
14 days 11 months 11 months

Performance & Interpretation

Turnaround Time

15 days

Results

Name
Units
Reference Range
Conversion
  1. Creatinine
    mmol/L
    Male: 3.5 - 25.0

    Female: 2.6 - 20.0
  2. Creatinine
    mmol/d
    Male: 8.6 - 19.4

    Female: 6.3 - 13.4
  3. Arsenic-Inorganic
    µg/L
    0.0 - 10.0
  4. Arsenic-Inorganic
    µmol/L
    0.00 - 0.13
  5. Arsenic-Inorganic
    µg/d
    0.0 - 15.0
  6. Arsenic - Inorganic
    µmol/d
    0.00 - 0.20

Test Version

Last Updated

2022-01-03