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Test Code PDSU Drug Screen, Prescription/OTC, Urine

Reporting Name

Drug Screen, Prescription/OTC, U

Useful For

The qualitative detection and identification of prescription or over-the-counter drugs frequently found in drug overdose or used with a suicidal intent


This test is designed to provide, when possible, the identification of all drugs present.

Method Name

Gas Chromatography-Mass Spectrometry (GC-MS)

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required

Supplies: Plastic, 60-mL urine bottle (T313)

Container/Tube: Plastic, 60-mL urine bottle

Specimen Volume: 30 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. See Prescription and Over-the-Counter (OTC) Drug Screens in Special Instructions.

2. For chain-of-custody testing, order PDSUX /  Drug Screen, Prescription/OTC, Chain of Custody, Urine. For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available.

3. Not intended for use in employment-related testing.

4. Submitting less than 30 mL will compromise our ability to perform all necessary testing.

Forms: Chain-of-Custody Request Form is included in the Chain-of-Custody Kit (T282). A copy of this form is also available at

Specimen Minimum Volume

1.1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  3 hours

Reject Due To









Reference Values

Drugs detected are presumptive. Additional testing may be required to confirm the presence of any drugs detected.

Day(s) and Time(s) Performed

Monday through Sunday; Varies

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
PDSU Drug Screen, Prescription/OTC, U In Process


Result ID Test Result Name Result LOINC Value
31260 Drugs detected: 12286-1
45529 Suspect Drug In Process
31262 Chain of Custody No LOINC Needed

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.

Secondary ID