KIDNEY STONE URINE PANEL, 24 HOUR
Collect a single 24-hour urine collection without preservative. Record the 24-hour urine total volume on the test requisition. Using the containers in the kidney stone kit, prepare two 50 mL aliquots from the well-mixed 24-hour collection. One aliquot should have HCL preservation and the other no preservative. Write total volume on both aliquots and freeze immediately. Ship on dry ice.
Evaluate stone composition, metabolic factors affecting stone formation; work up nephrolithiasis
Ammonia; calcium; chloride; citrate; creatinine; cystine; magnesium; osmolality; oxalate; pH; phosphorus; potassium; sodium; sulfate; total volume; uric acid; saturation ratios: brushite, calcium oxalate, monosodium urate, struvite; graph review