I have a friend who smoked a blunt the night before a saliva test. It is not recommended to do so, but yes you can.
Not sure what you mean by saliva, but cocaine can be out of your system in a few days..
yes
no
Don't do cocaine.
3 days
Maybe you should have thought of that before taking them.
Yes.
No, you will fail this test.
Good luck
Yes, you can .. a saliva test is designed for a maximum window of 3-4 days
For cocaine: Smoked, Snorted, Intravenously-You looking at 2 to 3 days if your body type is athletic and your metabolism is on the higher end. If your metabolism is slow and your over weight the longer it will take to exit the body. The more overweight the longer.