Bloodwork with your DR

Is there anywhere in Hawaii where you can get blood work without going through your doctor?.. I had a doctor and he was awesome but he retired recently and got replaced with a very “YOUNG” one starting out and those are the ones that usually deny you “minor” stuff because they think they know better.. older more experienced. Doctors don’t do that.. I just wanna test my iron and my vitamins🤦🏽‍♂️