[A surveillance method for products used by drug addicts examined in emergency units]. / Essai de mise au point d'une méthode de surveillance des produits utilisés par les toxicomanes consultant dans les services d'accueil.

Products used in a toxicomaniac way are in rapid change, and different from different area. Users too have to be better known. Authors present a simple survey method of these products, based on sample use. First results seem to be correct. These method may be used, associated with others, in a network as those existent for many years in the United States.