I’m not sure about other states, but the one I live in usually requires two brain death tests at least 6 hours apart and by different MDs that have to be credentialed to perform brain death testing. They also have(and usually perform) an apnea test where they turn the ventilator off for a set period of time and see if the patient initiates any breathes on their own as well as measuring blood gases before and after the procedure. Finally, they often use an injected nucleotide to measure blood flow to the brain, taking multiple images of several angles to confirm that there is no blood flowing to the brain.

If the person was on any paralytics, they have to be cleared from the system before testing can begin as well as all labs such as sodium, potassium, etc. and body temperature must be within normal parameters to begin.

If all those things are confirmed, the person is legally declared dead with an official time of death and only then can the legal next of kin be approached for organ donation.

Basically, this person is bonkers(as we all know) and organ donation is highly regulated.