Acetylcholinesterase (AChE) and pseudocholinesterase, two key transmitters in the body, are measured with the cholinesterase blood test (PChE). These transmitters support the nervous systems healthy operation. While PChE is located in the liver, AChE is found in red blood cells and nerve tissue. To determine poisoning or toxicity from organophopshates, which are typically found in pesticides, a cholinesterase test is utilised. Before administering succinylcholine-based anaesthesia and to identify liver illness, this test may also be required.