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Test Code LAB20087 Arsenic with Reflex, 24 Hour, Urine


Necessary Information


24 Hour volume is required.



Specimen Required


Patient Preparation:

-Patient should not eat seafood for a 48-hour period prior to start of collection.

-High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

Supplies: Urine Tubes, 10 mL (T068)

Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert.

Submission Container/Tube: Plastic, 10-mL urine tube (T068) or clean, plastic aliquot container with no metal cap or glued insert.

Specimen Volume: 10 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

3. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.

Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens.


Secondary ID

48537

Useful For

Preferred screening test for detection of arsenic exposure in 24-hour urine specimens

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
ASFR Arsenic Fractionation, 24 Hr, U Yes No

Testing Algorithm

If arsenic concentration is 35 mcg/L or greater, then fractionation will be performed at an additional charge.

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Reporting Name

Arsenic w/Reflex, 24 Hr, U

Specimen Type

Urine

Specimen Minimum Volume

3 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  72 hours

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

0-17 years: not established

≥18 years: <18 mcg/24 hour

Day(s) and Time(s) Performed

Monday through Saturday; 7 p.m.

 

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82175

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ASU24 Arsenic w/Reflex, 24 Hr, U 5587-1

 

Result ID Test Result Name Result LOINC Value
48537 Arsenic, 24 Hr, U 5587-1
TIME3 Collection Duration 13362-9
VL14 Urine Volume 3167-4
92214 Arsenic Concentration w/Reflex 21074-0

Urine Preservative Collection Options

Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection.

Ambient

Yes

Refrigerate

Preferred

Frozen

Yes

50% Acetic Acid

Yes

Boric Acid

No

Diazolidinyl Urea

No

6M Hydrochloric Acid

Yes

6M Nitric Acid

Yes

Sodium Carbonate

No

Thymol

No

Toluene

No