Another Pilot here in a similar situation. Have not had a sip of alcohol in close to three years and had a positive (274ng/ml!) come back from a finger prick test. Have been under a monitoring program for over two years now and never had a positive. Went and took another blood test (intravenous) 16 days later and it came back negative. Also had a nail-ETG test done 28 days later and it came back negative. Something is wrong, lost my medical, its like a bad dream that wont stop.