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Test Code USLNQ Selenium, Urine Quant.

Collection Container

24 hour urine jug

Specimen Required

24 hour urine


NOTE: 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.

Specimen Volume

20 mLs of 24 hour urine

Minimum Specimen Volume

5 mLs of 24 hour urine

Transport Temperature


Specimen Stability

Room temperature: 7 day, Refrigerated: 14 days, Frozen: 14 days.

CPT Code


EMR Interface Order Code