I saw a chart that said 1-7 days for urine and 24 hours for a blood test, i just find that hard to believe that it lasts longer in urine and only 24 hours in a blood test? Like i said im 6'2'' and about 175 pounds give or take. my daily dose is 85 mgs of the liquid Methadone and i have been taking it for going on 3 months now. If any one can give me any kind of an idea of how long liquid Methadone can be detected in a blood test for i would greatly appriciate the info because i have to take a blood test that is testing for it. thanks in advance