What test is used to retest saliva for a false positive alcohol

I have been in a methadone clinic for a couple of years and am finally trying to phase up when I could not provide a urine sample so they did a saliva test that you put .05 ml of saliva in a bottle to be tested . I have been borderline diabetic for years and have not been told that I am diabetic ever , but I failed the test for alcohol and I have not drank a drop in over ten years . I had it sent off to be retested for alcohol only and they are telling me that this test will only come back positive for alcohol does anyone know if this is true or not ?
Asked Sep 13, 2013

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