question about pre-reqs?

I'm not great at math but I consider myself o.k. I noticed for the pre-reqs for the CRNA program, calculus is listed among other subjects. I was wondering if any of you student actually took calculus, since its not required for the GRE exam according to my research. I'm taking pre-reqs right now and I'm wondering if I have to take calculus now, If I do decide to go the CRNA route. Thanks.