PDSU - Specimen: Drug Screen, Prescription/OTC, Urine

Test Catalog

Test ID: PDSU    
Drug Screen, Prescription/OTC, Urine

Specimen Type Describes the specimen type needed for testing


Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

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 http://www.mayomedicallaboratories.com/it-mmfiles/chain-of-custody-request-form.pdf.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

1.1 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected









Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
UrineRefrigerated (preferred)14 days
 Frozen 14 days
 Ambient 3 hours
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