What are the test indicators before abdominal puncture?

Abdominal puncture is a technique in which fluid is extracted from the abdomen through a puncture tube or catheter directly from the anterior abdominal wall into the peritoneal cavity to assist in the diagnosis and treatment of diseases. This technique is a simple method to determine whether there is ascites or not and to identify the nature of ascites. It can be divided into diagnostic and therapeutic abdominal puncture tubes.