Neutron activation
Neutron activation analysis conducted at Oak Ridge National Laboratory revealed no evidence of poisoning, as arsenic levels were too low. The analysis concluded Taylor had contracted "cholera morbus, or acute gastroenteritis", as Washington had open sewers, and his food or drink may have been contaminated. Any potential for recovery was overwhelmed by his doctors, who treated him with "ipecac, calomel, opium, and quinine" at 40 grains per dose (approximately 2.6 grams), and "bled and blistered him too."