A Purification Method by Uncoated Charcoal

The persistent state of sickness of patients in periodical dialysis, has been attributed, during the last years, to the retention of “uremic toxins” never identified with certainty. Parathyroid hormone, guanidinic compounds, aromatic substances, indacan, middle molecules, etc.have been proposed at various times the specific molecule responsible of the uremic state. Middle molecules which had in the past a very large following, have been recently defined elusive by many authors1-3.