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Test Code LSDU Lysergic Acid Diethylamide (LSD) Confirmation, Random, Urine

Advisory Information

Additional drug panels and specific requests are available, call 800-533-1710 or 507-266-5700.

Additional Testing Requirements

If urine creatinine is required or adulteration of the sample is suspected, the following test should be requested, ADULT / Adulterants Survey, Urine. For additional information, refer to ADULT / Adulterants Survey, Urine.

Specimen Required

Supplies: Urine Tubes, 10-mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. No specimen substitutions.

2. No STATS are accepted for this procedure.

Useful For

Confirming use of lysergic acid diethylamide

Testing Algorithm

See Adulterant Survey Algorithm in Special Instructions.

Special Instructions

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) Confirmation with Quantitation

Reporting Name

LSD Confirmation, U

Specimen Type


Specimen Minimum Volume

5 mL

Specimen Stability Information

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

Reject Due To

Gross hemolysis OK
Gross icterus Reject

Reference Values


Cutoff concentrations: 



<0.5 ng/mL

Day(s) and Time(s) Performed


Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

CPT Code Information


G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LSDU LSD Confirmation, U In Process


Result ID Test Result Name Result LOINC Value
20668 LSD-by LC/MS/MS 20542-7
20679 LSD Interpretation 69050-3


If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.