All patients who pass a stone
– Serum creatinine, calcium, and uric acid
– Urine R&M
– Urine C&S
Recurrent stone formers / high risk patients
– Full metabolic work up
- TWO 24 hr. urine collections (Volume, pH, Cr., K+, Na+, Ca++, phosphate, uric acid, oxalate, Mg++, citrate)
- Serum (Ca++, PO4, uric acid, creatinine, electrolytes – PTH if hypercalcemic)