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Test ID PCPX Phencyclidine Confirmation, Chain of Custody, Random, Urine

Useful For

Detection of drug abuse involving phencyclidine (street names: angel dust, hog, or angel hair) in urine specimens handled through the chain-of-custody process

Method Name

Immunoassay/Gas Chromatography-Mass Spectrometry (GC-MS) Confirmation with Quantitation

Reporting Name

Phencyclidine Confirmation, CoC, U

Specimen Type


Ordering Guidance

This test is for situations that require the chain-of-custody process. For testing not requiring chain of custody, order PCPU / Phencyclidine Confirmation, Random, Urine.

Specimen Required

Supplies: Chain of Custody Kit (T282)

Container/Tube: Chain-of-Custody Kit containing the specimen containers, seals, and documentation required.

Specimen Volume: 10 mL

Collection Instructions: Collect specimen in the container provided, seal, and submit with the associated documentation to satisfy the legal requirements for chain-of-custody testing.

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

Reference Values



Cutoff concentrations


<25 ng/mL



<10 ng/mL

Day(s) Performed

Monday, Wednesday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PCPX Phencyclidine Confirmation, CoC, U 16254-5


Result ID Test Result Name Result LOINC Value
6672 Phencyclidine Immunoassay Screen 19659-2
36229 Phencyclidine-by GC/MS 16254-5
36230 Phencyclidine Interpretation 69050-3
36231 Chain of Custody 77202-0

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 US Food and Drug Administration.

Additional Tests

Test ID Reporting Name Available Separately Always Performed
COCH Chain of Custody Processing No Yes
ADLTX Adulterants Survey, CoC, U Yes Yes

Testing Algorithm

Testing for adulterants will be performed on all chain of custody urine samples per regulatory requirements.

Report Available

2 to 7 days

NY State Approved



1. Chain of Custody Request is included in the Chain-of-Custody Kit (T282).

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