Litholink 24-Hour Urine, KS

Use: This test is used for treatment and management of known or suspected kidney stone formers.

Limitations: This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Methodology: Calcium, magnesium, creatinine, oxalate, citrate, uric acid, urea nitrogen, ammonium, cystine screening, phosphorus: Colorimetric

Sulfate: Turbidity with barium precipitation

Sodium, potassium, chloride: fluoride for urine volume: Ion specific electrode

pH: Potentiometry