Yes it is possible.
I work in Regulatory at a major IVD company.
A former co-worker of mine (W.) had two service dogs (one in service, one in training) that he brought into work every day, who were trained to signal whenever he experienced precipitous hypoglycema. He was on my floor and we greeted the dogs daily. I was out of the office at the time, but I heard of at least one case where the dogs did their job; a coworker made W. drink some juice and all was well.
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