3 days
Methylphenidate can be detected in urine for 2-4 days, but it is not tested for nor does it cause a positive result on a drug screen. It will not cause a false positive for any other drug. Methylphenidate CAN be tested for, but it requires a special test which is looking only for use of methylphenidate.
Methylphenidate (Ritalin) can show false positives for amphetamine or methamphetamine (5 panel test) but Detection time in urine its 3-5 days
Likely as soon as fresh urine is made after use. Certainly by 2 hours after use. Probably less. The shortest time to become clean is likely 36 to 48 hours. It can often be much longer.
Benzodiazepines can be detected up to a week after use.
A medical dose of opium derivatives will be detectable in urine for about 12 hours to 3 days depending on your unique metabolic rates. Casual opiate use can be detected for about 1-2 weeks according to most tests and "Heavy" use can be detected for about a month.
24-72 hours at the most.
With a single use of a typical dose, PCP is usually detectable for up to a week in a urine test. With regular use, it can generally be detected in urine for up to a month, as it is a fat-soluble compound.
Almost no drug is detectable in urine 3 months after last use, this usually requires testing of hair.
It is detectable in urine for up to 72 hours, but I am not sure if it stays anywhere else in your body for longer
Depending on liver and kidney function, cocaine metabolites are detectable in urine. Benzoylecgonine can be detected in urine within four hours after cocaine intake and remains detectable in concentrations greater than 150 ng/ml typically for up to eight days after cocaine is used. Detection of accumulation of cocaine metabolites in hair is possible in regular users until the sections of hair grown during use are cut or fall out.
With a single use of a typical dose, PCP is usually detectable for up to a week in a urine test. With regular use, it can generally be detected in urine for up to a month, as it is a fat-soluble compound.
No. Although the detection times vary among the hallucinogens, they are typically only detectable in urine for a few days after use. Also, with the exception of PCP, they are not typically tested for anyway.