The primary objective of the study was to assess the safety in use of the drug Heparin Sodium, produced by Cristália Laboratory, compared drug Liquemine ®, manufactured by Roche Laboratory, and secondary purpose was to evaluate the non-inferiority clinical testing of the product on the product comparator and pharmacodynamic effect, as evidenced by analyzing the parameters and TTPA Anti-Xa in patients with chronic renal failure in treatment of hemodialysis.