If you're asking how long weed stays in your system, it depends on how daily you smoke. If you only smoke on the weekends or so, it'll only be in your system for a day or two, but if you smoke just about every day, it'll be there for about a month.
Immediately-an hour for urinary analysis. About four days for a hair sample
Same place you get urine tests that test for weed or crack--go online and search for drug test kits. There are several vendors.
Yes, in fact it can be detected by drug tests months after you do it.
Your hair might have remains, but most drug tests use urine, and yes, your urine will be clean.
2 weeks
3-5 weeks.
Forever
Ritalin will typically stay in your urine for a month. Urine tests are sensitive enough to detect urine long after the last consumption.
it's kush, first of all. and kush is a type of weed, so yes it is detectable.
30-60 days
1 billion years :L
yes. it does show up in urine test.
i prettysure in shows up in bloods but not urine