[Theoretical basis and practical carrying out of an APTT control test for exact heparin monitoring (author's transl)].

We presented in this journal (Med. Klin. 71 [1976], 116), a procedure how to avoid hemorrhage risks due to heparine giving during hemo-dialyses. In this presentation is found the theoretical basis of the "minimal heparinisation". The practical carrying-out of the APTT (Activated Partial Thromboplastin Time)-control test as demonstrated by the 1200 bedside test cases, was done in order to give the personal without lab experience a practical guideline in the hand.