I agree with the post above, however play your cards right. In my case, I took the DAT 5 years ago right after I finished orgo and a biochemistry course, and did well in those sections. Since then I got a masters and reapplied and had to retake the DAT. I did well in bio and the rest, but my orgo section suffered because it is a difficult section to re-learn. My opinion is to weigh when you take the test with regards to the mastery you have of each subject. Some sections are easier to study for than others.