He just stuck an open sample cup in the fridge or did he pour it into snap top plastic vial(s) and give you forms and seal the vial(s) with a piece of paper with your name on it? Was there no temp strip on the donor cup?

A hospital may do its testing in house instead of sending it to a lab but the process and regulations are the same if you went to a collection center. Immunoassay follwed by GC/MS for confirmation along with validity testing.

As far as the ramifications go, some companies offer rehab for first time offenses as part of a health care plan. Rehab is for quiiters though.