A stool sample collector is comprised of a sheet of water-soluble material such as heavy-weight polyvinyl alcohol film, six to nine inches by 20 to 26 inches. In use, the strip is positioned across the toilet bowl against the bowls back rim, the front edge of the strip drooping down to a few inches above the toilet water. The strip is affixed across the bowl by moistening at each end and pressing against the sides of the bowl. Positioning of the strip is facilitated by markings on the strip. Retention of stool samples is enhanced by dimples or riffles in the strip. After use, the strip may be removed and flushed in a domestic toilet.
