Quick answer
Not on standard panels; requires a dedicated assay. Urine detection is typically about 1–3 days. In California, marijuana status is: Recreational + medical legal.
Detection windows in California
| urine | |
|---|---|
| Any use | roughly 1–3 days (specialised assay) |
| saliva | |
| Any use | limited data |
| hair | |
| Any use | detectable on specialised testing |
| blood | |
| Any use | hours |
Detection windows are the same nationwide; only state law and workplace policy differ. Ranges vary with dose, frequency and the assay.
Testing in California
California generally allows employers to test for cannabis and act on positive results, especially in safety-sensitive roles. A 2021 state law (AB 2188) restricts most pre-employment testing for off-duty cannabis use, but testing remains common and a medical card is not a blanket shield.
California's off-duty lawful-conduct law (Labor Code 96(k)) protects employees from adverse action for lawful off-duty conduct, but courts have held it does not bar drug testing or discipline for cannabis use in many cases.
About Mescaline (peyote)
Mescaline is the psychoactive alkaloid in peyote and San Pedro cactus. Standard workplace panels do not include it.
Detection requires a dedicated assay; a routine 5-, 10- or 12-panel will not identify mescaline.
Because it is used in small quantities and cleared relatively quickly, urine windows are short compared with cannabis or benzodiazepines.
Frequently asked questions
How long does mescaline (peyote) stay detectable in California?
Detection windows do not vary by state — they depend on the substance, dose, frequency and specimen. See the table above for typical ranges.
Can an employer in California test for mescaline (peyote)?
California generally allows employers to test for cannabis and act on positive results, especially in safety-sensitive roles. A 2021 state law (AB 2188) restricts most pre-employment testing for off-duty cannabis use, but testing remains common and a medical card is not a blanket shield.
Is marijuana legal in California?
California: Recreational + medical legal. California legalized medical marijuana in 1996 and adult-use marijuana in 2016, with retail sales beginning in 2018. Adults 21 and older may possess up to one ounce and grow up to six plants at home. Workplace drug testing remains lawful in many circumstances despite state legalization.