@julcos welcome to Mayo Clinic Connect. @abmac is right that this is a question best answered by your transplant team. I’m glad to hear that they are allowing your husband to continue with testing and to take the 24-hour urine collection. I, too, have had one kidney stone years ago. I definitely don’t want to repeat that experience. So far, lifestyle changes have helped prevent further kidney stones, like using a standing desk, drinking more water and making sure that when in long meetings I get up and move around.
Has you husband also changed to healthier habits since the kidney stone experience? I also invite you to share more about you. How are you doing as you wait for a donor?