Can any doc explain if you get put to sleep for a biopsy?

Anesthetic. The answer to this is basically, "it depends." On where the biopsy is coming from, on what type of biopsy, what localization is being done (CT, EUS, etc.) and what your age and clinical conditions are. Fine Needle biopsies often need no anesthesia, some bx need local pain control, and others require general anesthesia (put to sleep.)