Labs are usually "somewhat" connected. If you are going to take it at another school, make sure the med schools are okay with this, and make sure the material covered is equivalent. Not every school teaches BIO in the same sequence. For example, if BIO 101 starts with molecular bio at your school, make sure the lab covers the same material. A good lab class will help you learn the material, so make sure you are not sacrificing any learning. Maybe you can just try to add the lab during your school's drop/add period. Talk to the lab coordinator.