|Downtime form:||A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery|
Commercial laboratory studies indicate that refrigeration of urine alone, during and after collection, preserves specimen as well as any alternative preservatives added before collection, if specimen is tested within 14 days of collection.
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. Abstinence from iodine-containing medications or contrast agents for at least 1 month prior to collecting specimens for elemental testing is recommended.
Absolute Minimum: 2 mL urine from a well-mixed, refrigerated, 24 hr urine collection.
Components Reference Interval Arsenic, Urine-per volume 0.0-34.9 μg/L (based on Biological Exposure Index) Arsenic, Urine-per 24 hour 0.0-49.9 μg/d Arsenic, Urine-ratio to CRT 0.0-29.9 μg/gCRT Arsenic, Fractionated, Urine As Organic Refer to report Arsenic Total Inorganic Refer to report Arsenic, Methylated Refer to report Creatinine(24 hour) Male 3-8 years: 140-700 mg/d 9-12 years: 300-1300 mg/d 13-17 years: 500-2300 mg/d 18-50 years: 1000-2500 mg/d 51-80 years: 800-2100 mg/d 81 years and older: 600-2000 mg/d Female 3-8 years: 140-700 mg/d 9-12 years: 300-1300 mg/d 13-17 years: 400-1600 mg/d 18-50 years: 700-1600 mg/d 51-80 years: 500-1400 mg/d 81 years and older: 400-1300 mg/d
If urine, arsenic is abnormal, additional testing is performed by the reference laboratory. The patient will be charged for this testing when applicable.
Urine Tests Requiring Preservatives, Refrigeration or Special Containers