I'm 30, 5'9''/160lbs. i have been on suboxone for about 4 years. daily use of 0.5-1.0mg. how long until a urinalysis would show negative for bup?

Suboxone half life : The half-life is 20-70 hours with a mean of 37 hours. This means it will generally take 100 to 350 hours with an average of 185 hours. Best wishes.

It could take ...: From 3 to as many as 10 days, depending on the test.

It's usually: anywhere between 4-10 days. However, if you’re prescribed it, I’m uncertain as to why this would be an issue.