How can causaul use of cocaine 8 days before a urine screen show up as positive? Should I worry about kidneys?

Question

I took cocaine two to three times a day for a week. Not a lot of it and took a urine test 8 days after I discontinued using it. I showed up positive for cocaine and ecstasy. I want to know if taking my Adderall in high doses could have caused the positive for ecstasy, and if taking the amoxicillin I was prescribed could be the reason for the positive for cocaine since I took it up to the day of the test. They did a MS/CG urine screen and found 200 ng of cocaine in my system. Was this left over from my week of causual use a week before my urine screen, and is this a false positive? Can Adderall at more than 90 mg a day cause a false positive for the Ecstasy?

Please help me with this answer. I also need to know how long after cocaine use can it show up in the hair because I need to know before I go to get a hair test to fight these positives. Also should I be concerned with my kidneys because of the fact that my usage of cocaine showed up more than 8 days after use in my urine.

Answer 1

I didn't know there was such a thing as casual use of cocaine?

Cocaine can typically be detected for 2 - 4 days with a urine test but the ability for the test to detect it depends on several factors including metabolism and weight. And a hair test can show usage of drugs for up to 90 days.

Answer 2

I know if they do a hair test it will show up a while afterwards.....as for the amoxicillin def. not.. so I wouldn't try to make that up for an excuse bc they will know your guilty... go to a gmc store and get that decleanser..it works... dont do cocaine though..pls..i know alot of people its screwed over..