Can you test positive for marijuana right away?
yes, you eye lids will flutter a lot of the time, It also gets in your lungs and therefore it goes into the blood also. So you can get blood tested for it, and people can see that you may be high, however, nobody except maybe police do blood tests. For it to show up in urine for a normal drug test takes a number of hours for it to metabolize and get filtered by the kidneys. So if you are clean, you could smoke right before a urine test and pass. I wouldn't recommend it though.
You are going for an urine test and you use marijuana would you be test positive even if the main purpose of the test is not a drug test?
You can fail a drug test if you've been exposed to any drug the test is designed to screen for. That may or may not include marijuana. Drug tests may come back positive for marijuana if you unintentionally consumed marijuana in an edible state or of you inhaled a lot of second-hand marijuana smoke. If you have not smoked or eaten marijuana recently (within 1-2 months depending on what kind of test) and the test…
Only cocaine and marijuana would make a urine test show positive for cocaine and marijuana. For example, marijuana contains THC. Tetrahydrocannabinol, THC, is ONLY found in marijuana and nowhere else. However you can find it in some drinks and foods in Europe but it came from processed marijuana plants. Hope this helps you! :)