Arsenic, Fractionated, Urine


Abbrev Code:ARSF   
Order Code:LAB4586Order Name:Arsenic Frationated Urine
Methodology:Inductively coupled plasma/mass spectrometry/High performance liquid chromatography
CPT Codes: 82175 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-10 days.
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Urine Collection Procedure



Collection Instructions

Specimen:Urine, 24 hour or random collection
Optimal Volume:10 mL; analysis requires 2 mL
Container:3 L plastic jug
Alternate Containers: Plastic leakproof container, sterile
Collection Instructions:Specimen should be refrigerated during collection. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately if tested within 14 days of collection.
Causes for Rejection:Urine collected within 48 hours after administration of gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine. Specimens contaminated with blood or fecal material. Samples not aliquoted into ARUP metal-free plastic vials.


Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 8 mL, 2 mL minimum into 2 ARUP blue top metal free plastic vials. Regular aliquot tubes will be rejected. Record total volume and collection duration on transport tube and request form. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:1 week at room temperature; 2 weeks refrigerated; 1 year frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:20734


Interpretive

Reference Range:By report. The ACGIH Biological Exposure Index for the sum of inorganic and methylated forms (species) of arsenic is 35 ug/L. Inorganic forms of arsenic are most toxic. Methylated forms arise primarily from metabolism of inorganic forms, but may also come from dietary sources and are of moderate toxic potential. The organic forms of arsenic are considered nontoxic and arise primarily from food. The sum of the inorganic, methylated and organic forms of arsenic may be lower than the total arsenic level.
Use:Useful when exposure to arsenic is known but the species is uncertain. For initial testing, Arsenic, Urine with Reflex to Fractionated (0025000) is preferred.


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