1-alpha-OH-cholecalciferol (1-alpha-OHD3) and low phosphate diet in predialysis chronic renal failure: effects on renal function and on secondary hyperparathyroidism.

The effect of 1-alpha-OHD3 on the rate of decline of renal function was studied in 18 patients with predialytic chronic renal failure. 9 patients with serum creatinine 4.19 +/- 1.