Figure 3: Detection of isoprostane levels in urine. Urine was measured for 8,12,F2 isoprostane levels and normalized to creatinine level (ng/mg creatinine). Panel A shows a box plot of isoprostane levels in both diet groups (control and flaxseed) at the four time points. Panel B demonstrates the isoprostane level trend in 6 patients (2 control, 4 flaxseed).