Detection windows · dissociative
PCP (phencyclidine) detection windows
Phencyclidine is a dissociative anesthetic and one of the original federal "SAMHSA-5" analytes. Modern programs continue to include it under DOT and federal guidelines despite low population prevalence.
Last updated:How long is PCP (phencyclidine) detectable?
Detection windows for PCP (phencyclidine) vary by specimen, use pattern, and individual factors. As approximate ranges: urine commonly covers a few days (longer in chronic users), oral fluid covers hours to about 48 hours, blood covers hours, and hair offers up to ~90 days after a ~7–10 day incorporation delay. Full matrix below — and see the interactive Explorer for cross-substance comparisons.
| Specimen | Window | Pattern | Caveat |
|---|---|---|---|
| Urine | 4–7 days | occasional | Detection longer in chronic users due to lipid storage. |
| 14–30 days | chronic | Chronic users may show detectable urine PCP for weeks. | |
| Saliva | 1–72 hours | typical | Oral fluid window longer than for many drugs of abuse. |
| Blood | 1–24 hours | typical | Plasma detection short. |
| Hair | 7–90 days | typical | ~7–10 day incorporation delay. |
Ranges are approximate and vary by individual physiology, hydration, dose, frequency of use, and lab cutoff. They are not predictive of whether someone will "pass" a test.
About PCP (phencyclidine)
PCP is a dissociative anesthetic with hallucinogenic and stimulant effects. Detection windows are highly user- and dose-dependent and can be unusually long in chronic users due to fat solubility.
Key analytes / metabolites detected
- PCP (parent compound, primarily)
Common cross-reactants (immunoassay-stage)
The following can affect screening immunoassay results and are typically resolved by mass-spectrometry confirmation and MRO review:
- Dextromethorphan (high dose, rare)
- Tramadol (rare)
- Ketamine (low cross-reactivity)
Appears in panels
Confirmation method
GC-MS or LC-MS/MS is the standard confirmation method for PCP (phencyclidine).
Sources & references
drugtest.co content is sourced from primary regulatory and clinical references. We do not cite gray-market or "how to pass" sources.