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HelpTest Code PCPX Phencyclidine Confirmation, Chain of Custody, Random, Urine
Reporting Name
Phencyclidine Confirmation, CoC, UPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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
Chain of custody is required whenever the results of testing could be used in a court of law. Its purpose is to protect the rights of the individual contributing the specimen by demonstrating that it was always under the control of personnel involved with testing the specimen; this control implies that the opportunity for specimen tampering would be limited.
Method Name
Immunoassay/Gas Chromatography Mass Spectrometry (GC-MS) Confirmation with Quantitation
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 required documentation.
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 Type
UrineSpecimen 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 | OK |
Reference Values
Negative
Positive results are reported with a quantitative gas chromatography mass spectrometry result.
Cutoff concentrations
IMMUNOASSAY SCREEN
<25 ng/mL
PHENCYCLIDINE BY GC-MS
<10 ng/mL
Interpretation
The presence of phencyclidine (PCP) in urine is a strong indicator that the patient has used PCP.
Day(s) Performed
Tuesday, Thursday
Report Available
3 to 7 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83992
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 |
Forms
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.
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.