Is there any difference in expressions between "check with" and "check against"? When I wrote that "there were no procedures to collate lot numbers from the quality control department with the ones indicated on documents" the other day, but my coworker told me that I should use "check against" instead of "collate". Then, I rewrote my sentence like this "there were no procedures to check lot numbers from the QC department against the ones indicated on documents." When I consult a dictionary, I found another expression "check with". I also found some examples using this phrase; - I checked your answer with mine. - We will need to check these finished goods with the previous data. - I'd like to check with you about the trip your schedule. I wonder if "check with" is interchangeable with "check against". For example, in the first example that I wrote at work, can I write that "there were no procedures to check lot numbers from the QC department with the ones indicated on documents"?