Arsenic, Urine 24 Hr
Test Mnemonic
UARSND
CPT Codes
- 82175 - QTY (1)
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 8 mL | Urine, 24-hour (well-mixed) | Clean container | Refrigerate during collection. | Refrigerated | HEAVY METALS FORM REQUIRED to meet State Health Department requirements. Must collect in a plastic container; Specimen must not come into contact with glass or metal. Patient Prep: Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48 to 72 hours. High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure. Provide volume with specimen. Aliquot into a trace metal-free transport tube (ARUP #43116). |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 8 mL | Urine, random | Clean container | N/A | Refrigerated | HEAVY METALS FORM REQUIRED to meet State Health Department requirements. Must collect in a plastic container; Specimen must not come into contact with glass or metal. Patient Prep: Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48 to 72 hours. High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure. Provide volume with specimen. Aliquot into a trace metal-free transport tube (ARUP #43116) |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 1 week |
| Refrigerated | 2 weeks |
| Frozen | 1 year |
Days Performed
Sun - Sat
Turnaround Time
2 - 6 days
Methodology
| Name | Description |
|---|---|
| High Performance Liquid Chromatography (HPLC) | |
| ICP/Mass Spectrometry |
Reference Range
| Arsenic - per volume (ug/L) | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 0.0 - 34.9 (Based on Biological Exposure Index) | ug/L | |
| Arsenic - per24h (ug/day) | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 0.0 - 49.9 | ug/d | |
| Arsenic - ratio to CRT (ug/g CRT) | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 0.0 - 29.9 | ug/g crt |
Special Info
Patient demographics (Heavy Metals) form is required to meet State Health Department requirements. Indicate total volume. Patient preparation: Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48-72 hours. High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure. Urine specimens collected within 72 hours after administration of iodinated or gadolinium (Gd) contrast media and acid preserved samples are unacceptable. Specimens contaminated with blood or fecal material or specimens transported in non-trace element transport tube (with the exception of the original device) are unacceptable. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately if tested within 14 days of collection. This test is New York DOH approved.
Clinical Info
Preferred test for the assessment of acute or chronic arsenic exposure. If total arsenic concentration is between 35-2000 ug/L, then Arsenic, Fractionated, will be added to determine the proportion of organic, inorganic, and methylated forms. Additional charges apply. The ACGIH Biological Exposure Index is 35 ug/L, for the sum of the inorganic and methylated forms of arsenic. If low-level chronic poisoning is suspected, the ug/gCRT ratio may be more sensitive than the total arsenic concentration. For specimens with elevated total arsenic results, fractionation is automatically performed at additional cost to determine the proportions of inorganic, methylated and organic species.