multiple positive urine tests but negative blood test???

Jessica
HELP!!! has anyone ever had this? Ive taken over 10 urine tests, different brands and they all clearly say positive. Ive asked coworkers for second, third, and fourth opinions and everyone says its pos. However, a got a blood test done 3 days ago and it was >1...ive gotten positives before the blood and after. Blood is supposed to be more accurate than urine so wth is going on!!!!