Before any surgical procedure, pre-anesthetic bloodwork is performed (usually within one month of the procedure) to assess adeqate blood cells, as well as appropriate kidney and liver function. The night prior to anesthesia, do not offer your pet any food after 10:00pm. It is okay for your pet to have water up until the morning of surgery. It is important that anesthesia be administered when your pet has an empty stomach. If your pet is on any medication, a consultation with the doctor is advised before giving any medication, as the above fasting instructions may be altered.