When may an employer demand a drug test? How long is THC detectable? What applies to competitive athletes under WADA rules? The key facts at a glance.
## Drug Testing at Work: What Is Permitted?
German law does not grant employers a blanket right to demand drug tests. Tests are only permissible in specific situations: safety-sensitive roles (drivers, crane operators, chemical plant workers), on concrete suspicion of impairment, or under works agreements negotiated with the works council.
A positive urine test alone is not grounds for dismissal and does not prove current impairment – only past consumption.
## Detection Times
| Pattern | Urine (THC-COOH) | Blood (THC) | |---|---|---| | Single use | 2–4 days | 3–6 hours | | Regular (daily) | 10–30 days | 12–24 hours | | Chronic (years) | up to 90 days | several days |
## Drug Testing in Sport: WADA Rules
THC is prohibited in-competition only. The urine threshold is 150 ng/ml THC-COOH. Out-of-competition use is not prohibited under current WADA rules (since 2023, monitoring only).
CBD is permitted in sport since 2018 – but athletes should use certified THC-free isolate products to avoid inadvertent contamination.
About this article
Written and reviewed by the BlattWerk e.V. editorial team — licensed cultivation association in Hildesheim. Our articles are based on current legislation, scientific publications and our practical experience as a Cannabis Social Club.
Last updated: 2026-06-17 · Found an error or something missing? Let us know
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