The people I heard that Klonopin
doesn't come back +benzo
, was when I was on the methadone
clinic. At first I thought they must be mistaken, however, when my blood was tested that unfortunate day, I was surprised it only came back acetylcodeine.
It appears that most benzo's, except clonazepam
come back +benzo's on an initial screen. I think you are right about the metabolite of clonazepam not being picked up on the general benzodiazepine
I tested UA's for a living in a toxicology lab in Denver, however we used the EMIT for the initial screen, anything positive would then be screened by FIA. Then it would either go to the GC/MS or the Column Chromatography section. Then the GC/MS would be used for certain positives, and the rest were sent to be developed on Alumina Silica plates for spraying, and the standard spotted on the plate were compared to the suspected positive. Length of travel, color and size were compared to the standard. So if the initial EMIT (this was 1989) didn't pick up on clonazepam the UA would be called negative and would not proceed for further confirmation. (Sorry about using abbreviations, it's not necessary to know the technology behind the modality used, just that three modalities were used and they had to be positive on all three to call a UA positive, where I worked.)
So my question to Metalupyour455 would be: "Have your UA's been coming back positive on the benzodiazepine screen for benzo's, or have they just been saying: Your UA is negative?" If so, and you took alprazolam
, it will come back positive for benzodiazepines. Unless they further test the sample (which they normally don't) there is no way to distinguish between the two. Somewhat like a barbiturate screen. So, I wouldn't worry about it. They probably have finally figured why clonazepam did not (in the past) come back positive for benzo's. They usually use one screening technique that tests both specific and groups of chemicals. For example, THC, cocaine
/amphetamine, methadone are specific drugs
(natural, semi-synthetic and not purely synthetic), barbiturates, benzodiazepines are tested in group method. Thus, if one took a Vicodin or a Percocet, the initial screen would come up positive for opiates not hydrocodone
. This requires further advanced technology. Usually, further testing only happens when one contests a positive result which they believe should be negative. So, are your UA's coming back positive for benzo's when only taking Klonopin? because it will come up positive after taking Xanax
bars, but only for benzo's not for specifically Xanax. Then show them your script of Klonopin, all should be fine.