Do you incorporate the results of 24 hour urine chemistries that were obtained several years prior when evaluating new patients for kidney stone prevention?  

I do but the issue is complex. Interpreted in context - life events, surgeries, meds etc - they tell me the range of behaviors for a patient in chemistry terms. But it takes a lot of time, and is not a good idea unless you are prepared to take that time.

I try to review all data related to stone formation in new patients, including 24 hour urine data, stone analysis and imaging studies for stone burden (past and present). If a patient has prior 24 hour urine data, they likely had prior advice on stone prevention, which is relevant to understanding t...