ference on Tuberculosis emphasized the need for a simple and accurate tuberculin test that could be applied and read by nonprofessional health personnel (1).This need is greatest in developing countries where tuberculosis is often a major public health problem and professional health personnel are in short supply.In Co¬ lombia, although the exact magnitude of the tuberculosis problem is still unknown, substan¬ tial evidence indicates that the disease is a ma¬ jor cause of disability and death.In 1951, Dr. Frederick Heaf (2) published his technique for a multiple-puncture tuberculin test that seemed to have several advantages over the routine Mantoux procedure: not only did it prove relatively consistent, it was also cheap, it could be administered rapidly, and results were easy to read.The Heaf test was subsequently tried out in Great Britain and the Common¬ wealth with encouraging results.This method is not widely used in the United States, however, despite the publications of Robins and Daly (3), Andersen and Smith (^), Coulter and Martin (5),andHsu(tf).In