Figure 2.

Pattern of reduction in weight of calcium oxalate stone, uric acid stone, and combination of calcium oxalate and uric acid stone under pH 5, pH 7, and pH 8 in Orthosiphon stamineus extract concentration of 4 mg/ml. (a) Calcium oxalate stone; (b) uric acid stone; and (c) calcium oxalate and uric acid stone. The percentage weight reduction of combination stone (i.e., calcium oxalate and uric acid stone) was significantly different between acidic (pH 5), neutral (pH 7), and alkaline (pH 8) conditions (P = 0.027). The percentage weight reduction of calcium oxalate stone and uric acid stone was not significantly different between different pH