— Time dependence of the dialysate-to-plasma (D/P) concentration ratio of creatinine. At 3, 30, 60, 90, and 120 minutes, the D/P values were higher for the 6K than for the 19K glucose polymer (p < 0.001). The triangles (open = group A; closed = group B) denote results for the 6K glucose polymer, and the squares (open = group A; closed = group B) denote results for the 19K glucose polymer. Dashed lines denote group A rabbits (n = 11), and solid lines denote group B rabbits (n = 12).