Quick answer
PCP (angel dust) is typically detectable in urine for 3–7 days after occasional use; up to 14–30 days in chronic users (lipid storage) after heavy use. It is screened on standard 5-panel, 10-panel, 12-panel, DOT drug tests.
Screened on: 5-panel 10-panel 12-panel DOT
Typical cutoff: Urine: 25 ng/mL initial and confirm.
Detection window by test type
| urine | |
|---|---|
| Occasional use | 3–7 days |
| Heavy use | up to 14–30 days in chronic users (lipid storage) |
| saliva | |
| Any use | 1–3 days |
| hair | |
| Any use | up to 90 days |
| blood | |
| Any use | 1–3 days |
Ranges reflect typical published detection windows and vary with dose, frequency, body composition, hydration and the assay used.
Key details
PCP anchors the original federal 5-panel at a tight 25 ng/mL cutoff. Chronic use extends urine detection unusually long due to accumulation in fatty tissue and enterohepatic recirculation.
Recreational PCP use is rare today, but the panel retains it for safety-sensitive workforce protection.
False positives & cross-reactivity
- Dextromethorphan (Robitussin), diphenhydramine (Benadryl), doxylamine (NyQuil), tramadol, venlafaxine (Effexor), imipramine, ketamine, and meperidine have documented PCP-screen false positives — GC–MS confirmation is definitive.
Frequently asked questions
How long does pcp (angel dust) stay in your system?
In urine, typical detection is 3–7 days (occasional use); up to 14–30 days in chronic users (lipid storage) (heavy use). Hair can detect use for up to 90 days and saliva/blood windows are usually shorter.
Will pcp (angel dust) show up on a standard drug test?
Yes — PCP (angel dust) is screened on standard panels (5-panel, 10-panel, 12-panel, DOT).
Can anything cause a false positive for pcp (angel dust)?
Dextromethorphan (Robitussin), diphenhydramine (Benadryl), doxylamine (NyQuil), tramadol, venlafaxine (Effexor), imipramine, ketamine, and meperidine have documented PCP-screen false positives — GC–MS confirmation is definitive.
How accurate are these detection windows?
They are typical ranges from published literature and assay documentation, not guarantees. Clearance depends on dose, frequency, metabolism and the specific test cutoff used.
Related substances
Cite this page
DrugPanels. “PCP (angel dust) Detection Time.” https://drugpanels.com/detection/pcp/. Accessed 2026-09-10.
Sources
- Brahm NC et al., Commonly prescribed medications and potential false-positive drug test results, Mayo Clinic Proceedings 2008 — Mayo Clinic Proceedings — pubmed.ncbi.nlm.nih.gov
- SAMHSA drug testing resources and analyte specifications — Substance Abuse and Mental Health Services Administration — samhsa.gov
Detection windows describe typical ranges from the published literature and assay documentation; individual results vary. See our methodology.