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Test Code LDPU Limited Drug Profile, 3 Drug Classes, Immunoassay, Random, Urine


Ordering Guidance


The test does not screen for drug classes other than those listed in Testing Algorithm.



Specimen Required


Only orderable as part of profile. For more information see CSMHU / Controlled Substance Monitoring Hybrid Drug Panel, 20 Drug Classes, High-Resolution Mass Spectrometry and Immunoassay Screen, Random, Urine.

 

Supplies: Urine Tubes, 10 mL (T068)

Collection Container/Tube: Plastic urine container

Submission Container/Tube: Plastic, 10 mL tube

Specimen Volume: 5 mL

Collection Instructions:

1. Collect a random urine specimen.

2. Submit 5 mL in 10 plastic tube.

3. No preservative


Useful For

Detecting drug use involving barbiturates, cocaine, and carboxy-tetrahydrocannabinol

 

This test is not intended for use in employment-related testing.

Testing Algorithm

Testing begins with screening tests for drugs of abuse including barbiturates, cocaine, and tetrahydrocannabinol.

 

Positive results can be confirmed and quantitated by definitive methods, gas chromatography mass spectrometry for barbiturates, cocaine and metabolites and liquid chromatography tandem mass spectrometry for tetrahydrocannabinol metabolites, at an additional charge.

Method Name

Only orderable as part of profile. For more information see CSMHU / Controlled Substance Monitoring Hybrid Drug Panel, 20 Drug Classes, High-Resolution Mass Spectrometry and Immunoassay Screen, Random, Urine.

 

Immunoassay

Reporting Name

Limited Drug Panel, 3, IA, U

Specimen Type

Urine

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

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

Reference Values

Only orderable as part of profile. For more information see CSMHU / Controlled Substance Monitoring Hybrid Drug Panel, 20 Drug Classes, High-Resolution Mass Spectrometry and Immunoassay Screen, Random, Urine.

 

Negative

Screening cutoff concentrations:

Barbiturates: 200 ng/mL

Cocaine (benzoylecgonine-cocaine metabolite): 150 ng/mL

Tetrahydrocannabinol carboxylic acid: 50 ng/mL

 

This report is intended for use in clinical monitoring or management of patients. It is not intended for use in employment-related testing.

Interpretation

For information about drug testing, including estimated detection times, see Drug Class Testing on MayoClinicLabs.com.

Clinical Reference

1. Physicians' Desk Reference. 60th ed. Medical Economics Company; 2006

2. Bruntman LL Lazo JS, Parker KL, eds. Goodman and Gilman's: The Pharmacological Basis of Therapeutics. 11th ed. McGraw-Hill Book Company; 2006

3. Langman LJ, Bechtel LK, Holstege CP. Clinical toxicology. In: Rifai N, Chiu RWK, Young I, Burnham CAD, Wittwer CT, eds. Tietz Textbook of Laboratory Medicine. 7th ed. Elsevier; 2023:chap 43

4. Jannetto PJ, Bratanow NC, Clark WA, et al. Executive summary: American Association of Clinical Chemistry Laboratory Medicine Practice Guideline-using clinical laboratory tests to monitor drug therapy in pain management patients. J Appl Lab Med. 2018;2(4):489-526

Day(s) Performed

Monday through Saturday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US 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.

CPT Code Information

80307

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LDPU Limited Drug Panel, 3, IA, U 69739-1

 

Result ID Test Result Name Result LOINC Value
615289 Barbiturates 19270-8
615290 Cocaine 19359-9
615291 Tetrahydrocannabinol 19415-9