(or lack of)
I went to the local allergy specialist to get full bloodwork/testing done. When the doc asked me if I wanted the standard tests done or additional, I asked for everything possible. He pulled out the results of another patient's test and started explaining everything to me when I noticed the results were from my lemur who had blood taken a week before. Doc went red and covered up her name after I mentioned who's they were...obviously he wasn't trying to do anything malicious here but I can't help but remember the same scenario at other clinics...which could totally reveal some embarrassing info on one's neighbors. (most of the patients are locals, no?)