Rabies is usually detected by a blood test. Rabies can be detected in the blood of a rabies patient by the presence of rabies virus antibodies and rabies virus antigens, so rabies is usually detected by a blood test. If a person is bitten by a pet such as a dog or cat, the possibility of rabies infection should be considered after skin damage has occurred. Water, soap and water, iodine or disinfectant should be used immediately. At the same time, go to a regular hospital as soon as possible for vaccination, thus effectively reducing the probability of the patient suffering from rabies. At present, rabies cannot be treated and can only be prevented. It is recommended that patients bitten by cats, dogs and other mammals go to the hospital in a timely manner, under the correct operation of the doctor to play rabies vaccine, to avoid delaying the condition.