After dr said gastricsleeve leak had closed by 1month,felt tingling under left rib.ctscan show collection(5cm)&crp 70mg/l but after 1week crp became 17 without any treatment.then after 1day it's 13 dr said only to watch crp. what is the cause of that?

C reactive protein (CRP) is a reactive protein produced when there is systemic inflammation. It was 70 when there was significant inflammation; and it was measured serially to determine what was going on in the body and obviously the systemic inflammation went down because the body also heals itself by creating countermeasures to inflammation or other insults in the body.