My "glow in the dark" test
It was not too bad. You eat god-awful substitute eggs (which are horrible enough) mixed with radioactive isotopes. Then you lay down on a table with a huge machine fixed over your stomach that "reads" the amount and time it takes for the eggs to be digested. You can see the eggs on a screen (not the eggs themselves, but a cluster of lights...looks like a star galaxy) and watch as they eventually break apart and move down into your lower stomach and into your intestines. You must lay on your back for 2 hours and not move. That was the hardest part.
Won't know what the results are until Monday or Tuesday.
Amazing what they can do medically these days! Nuclear medicine.