I think it's important to understand certain things about the pre-tx testing process. They don't put you through these tests with the sole view of excluding you from the list. Obviously, if they find you have cancer or if you have something that they feel will kill you during surgery, then you won't be listed. If they find something that puts your health in danger, then they will want you to have it treated/cured so that THEN you can be listed. But also, they want to know if you will need any special support during surgery so that they can provide it. If they are made aware through the testing procedure that you have some respiratory problem that might be exacerbated by a particular anesthetic, for example, then they will want to know that so that they can avoid this particular drug. So, it's not that they are looking for ways to prevent you from being listed, rather, they want to know if you may have any special need they need to address before you are subjected to the trauma of surgery and the post-tx drug protocol.
Maybe this link will give you some reassurance..
http://www.nlm.nih.gov/medlineplus/ency/article/003853.htmLet us know for when your test is scheduled. I think that perhaps you can feel a little reassurance knowing it was your HMO and not your doctor who is recommending this test.