I took 5 7.5 hydro codon on thursday and have a drug test sunday what are my chances of passing?

Not likely: The urine tests not only for Hydrocodone but also for the compounds your body metabolisizes it into. A urinalysis 72 hours after taking that dose will likely be positive. Death from overdose on drugs is now the LEADING cause of death in the US. Don't take meds you are not prescribed, or in excess of prescribed doses. Please don't be one of the people that adds to the statistics.

Depends: It is usually evident for 1-2 days, but this depends on what else you take (legal or not) and your health (do you have liver disease?). If your drug use threatens your mood, relationships, job or freedom in any way, then it's time to stop.

Hydrocodone Testing: I understand your worry about passing Drug Test for Hydrocodone. I commend you if you ate seeking employment or want to maintain the job. Hydrocodone stay in the body will depend upon your metabolism, liver functioning and kidney functioning. Hair Drug Test will show metabolite of Hydrocodone for longer than few weeks. Your emotional Health and Occupational Health is Precious! See a Psychiatrist.