Likely the urine pH is more typically low in such patients, since the uric acid components will dissolve during periods of higher pH. Consequently, the appearance of uric acid crystals in the stone suggests that the urine pH is more typically low. Drinking more fluid to cause more dilute urine alway...

This is a very unusual patient who clearly has 2 different etiologies for stone formation. Uric acid stones require an acid urine to form, usually a pH below 5.8. Calcium phosphate stones require an alkaline urine to form, usually a pH above 6.3. Normal urine pH is approximately 6.0. In this case, t...

Before making treatment recommendations, we need to get appropriate 24/48 hour urine collections, such as Litholink to determine what factors are precipitating the precipitation of stones.