Final answer:
The subject of this question is Medicine, and it is about the orders that must be made using DEA Form 222 for specific substances.
Step-by-step explanation:
The subject of this question is Medicine. This question is asking about the orders that must be made using DEA Form 222 for specific substances. DEA Form 222 is a form used by registered practitioners to order quantities of controlled substances for legitimate medical purposes.
In this case, the specific substances mentioned are Opium, Heroin, Fentanyl, Morphine, Oxycodone, Vicodin, methadone, and other prescription pain relievers. Therefore, the orders using DEA Form 222 must contain ONLY orders for these substances.