What this test measures
Cocaine itself has a very short half-life (~1 hour) and is rarely detected in urine. The major metabolite benzoylecgonine has a longer half-life (~6 hours) and is the standard analyte. SAMHSA screen cutoff 150 ng/mL; confirmation by GC-MS / LC-MS at 100 ng/mL. Detection window 2–4 days for single use; up to 14 days for chronic heavy use.
Why it matters
Cocaine use is rising in urban India but remains less prevalent than alcohol, cannabis, opioids, and amphetamines. Screening contexts: workplace / pre-employment (corporate, aviation, transport, hazardous industries), pre-bariatric / transplant evaluation, forensic / medico-legal, athletic drug control (NADA, WADA — banned), and deaddiction monitoring. Cross-reactivity is minimal — false positives are rare. Topical anaesthetic cocaine (rarely used in ENT) and coca-leaf tea (illegal in India) are the only common confounders.
How to prepare
Random urine sample, chain-of-custody if for legal / employment purposes. Disclose any topical anaesthetic use (rare ENT applications) and any prescription medications.
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| Urine Benzoylecgonine (ng/mL)[1][2] | Negative (< 150 ng/mL screen cutoff) | Negative — no recent cocaine use within detection window. | Positive (≥ 150 ng/mL) — cocaine use within the past 2–14 days. False positives are uncommon; topical cocaine (ENT use), coca-leaf tea consumption. |
Cocaine detection windows
| Use pattern | Urine detection | Blood / saliva |
|---|---|---|
| Single recreational use | 2–4 days | 12–24 hours |
| Daily use | 5–7 days | 1–2 days |
| Chronic heavy / binge use | Up to 14 days | 2–4 days |
| Hair test (any use within 90 days) | 90 days | — |
Frequently asked questions
Can passive exposure cause a positive?
Rare. Casual environmental contact does not produce a positive urine cocaine screen.
Is there cocaine in any legal product in India?
No. Legal coca-leaf products (some teas in South America) are not available in India. Topical cocaine used in ENT surgery can produce positives but is uncommon.
How long can hair detect cocaine?
Hair testing detects use up to ~90 days back, depending on hair length. Body hair detects longer histories than scalp hair.
What does benzoylecgonine specifically mean?
It is the major inactive metabolite of cocaine that the body excretes in urine. Detecting it confirms recent cocaine exposure.
Can the test distinguish snorted from injected cocaine?
No. The metabolite is the same regardless of route.
Are there cardiac complications of cocaine?
Yes — cocaine causes vasoconstriction, hypertension, arrhythmias, MI (even in young users with normal coronaries), and aortic dissection. Cocaine-associated chest pain warrants ECG and troponin evaluation; beta-blockers are traditionally avoided.
Related Drugs / Therapeutic Monitoring tests
Tests commonly ordered alongside COCAINE, or that help interpret an unexpected result.
Sources & references
- SAMHSA — Urine Drug Testing Guidelines · accessed 2026-05-30T00:00:00.000Z
- NIH MedlinePlus — Drug Testing · accessed 2026-05-30T00:00:00.000Z
- StatPearls — Cocaine Toxicity · accessed 2026-05-30T00:00:00.000Z
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