Thanks for the encouragement.
My older sister has bipolor disorder, so I never wanted to consider her as a potential donor. Although I think she'd want to be considered, I'm glad to be able to play the bad genetics card to eliminate her because of the possible mental/emotional issues it could cause for her. She's in her 50s and is only just figuring out how to not call for help from my parents when she gets into a bind. She's a very responsible person, but taking her out of her normal routines for small things (holidays, visits, etc) makes her a bit hyper. Testing, travel to donate (I'm in Oregon, my family is in Minnesota), and then surgery itself..... I don't even want to imagine it!
I know genetic studies are underway to identify the bad gene, but I don't know if it's been located yet. My family participated a couple of years ago by sending off blood samples for the study, so for now, I think the answer to "is there a genetic test for my relatives" is "no" for now. Maybe the answer will change by the time I need one. What's meant to be, will be.
I'm going to start the workup process as soon as my neph refers me. I'll find out my blood type with my next round of labwork. My neph said if I'm an "A," it's ok to hold off a little longer, but otherwise she'll refer me as soon as my creatinne hits 3.0 (It's 2.91 now). With the trend I'm showing, I suspect I'll start the workup process within a year.
It's all made me think about how there are some people I just wouldn't want to donate to me. Maybe I'll think differently later. I have an acquaintance who is always very helpful (too helpful? or maybe I'm too sensitive to such things) and I wouldn't want a kidney from her because I feel some boundary issues from her and I think I'd feel like I was imprisoned by her helpfulness. I don't know if that makes any sense.