The article titled, "The Physicians' Office Laboratory: 1988 and 1996 Survey of Illinois Pediatricians," by Binns et al,1 was interesting and provocative. Their documentation of the changes made in the office laboratories of Illinois pediatricians from 1988 to 1996 is an important addition to the literature. They report a decrease in the percentage of pediatric offices doing tests in their laboratories (93% vs 84%) and in the median number of tests performed in each laboratory (6 tests vs 4 tests).