CEACAM5 and colorectal carcinoma: The results showed that differences in age and sex did not change the screening value of NLR, PNI, D-D, CD3 + T, and CEA for CRC; D-D and CEA were positively correlated with the risk of CRC, while PNI and CD3+ T were negatively correlated with the risk of CRC (P < 0.05, Table 3).