Intraperitoneal injection
Conventional medicine
Intraperitoneal injection or IP injection is the injection of a substance into the peritoneum, which is the serous membrane that lines the abdominal cavity. The procedure is more often applied to animals than to humans, specifically as a method of drug administration in many in vivo studies. In general, it is preferred when large amounts of blood replacement fluids are needed or when low blood pressure or other problems prevent the use of a suitable blood vessel for intravenous injection.