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Test Code LABS0594 Adulterants Survey, Urine

Additional Codes

Mayo Test Code: ADULT

Useful For

Assess the possible adulteration of a urine specimen submitted for drug of abuse testing, as well as for providing the urine creatinine for "creatinine normalization"

Testing Algorithm

See Adulterant Survey Algorithm in Special Instructions.

Special Instructions

Specimen Type


Specimen Required

Container/Tube: Plastic, 60-mL urine bottle

Specimen Volume: 20 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody information, see ADLTX / Adulterants Survey, Chain of Custody, Urine.

2. Submitting less than 20 mL will compromise our ability to perform all necessary testing.

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Reject Due To









Day(s) and Time(s) Performed

Monday through Sunday

Performing Laboratory

Mayo Medical Laboratories in Rochester

CPT Code Information


Method Name

Spectrophotometry (SP)

Reference Values

Cutoff concentrations

Oxidants: 200 mg/L

Nitrites: 500 mg/L

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.