Do you recommend 24 hour urine stone risk studies for patients with no history of nephrolithiasis who are undergoing evaluation as potential kidney donors?

We ask all donors if they have had a history of kidney stones. All donors also get a CT angiogram of the abdomen. Patients with a stone history will need a 24-hour urine stone risk profile. If a donor has an incidental single stone, we may still allow donation, but we would ask for a 24 stone profil...

No. 24-hour urine studies typically calculate the risk of making stones from the concentration of urinary minerals. They typically do not take into account the naturally occurring inhibitors of stone formation. Thus, a “positive“ 24-hour urine supersaturation study in a never-stone former is not ver...