“…Additionally, the timing of blood tests varied between studies that analysed systemic biomarkers, from daily to selective days. Furthermore, none of the included studies distinguished biomarker levels between colonic and rectal resections, or disease process, nor took into account medications that may alter the inflammatory response, such as statins and steroids 12,62 . Use of peritoneal drains remains a contentious issue, with some studies 63,64 showing no benefit.…”