First I have to ask was this from the vials that I suspected to have been mast p and not Mast E due to a labeling error? If so then we only confirmed what I suspected. And this was isolated to 2 individuals and happend 3 months ago.
As far as deca being present only thing I could think is if the filter previously had deca filtered then had mast filters. AS of late I do a rinse so this can never happen.
Who has a labmax kit right now? I will next day Mast E to you and compensate you for the test.
You reuse bottletop filters for more than one compound?