Journal of Clinical Microbiology, 03 1997, 537-543, Vol 35, No. 3
LL Bakken, SM Callister, PJ Wand and RF Schell
In 1991, we reported that 55% of laboratories participating in the
Wisconsin Proficiency Testing Program could not accurately identify serum
samples from Lyme disease patients containing antibody against Borrelia
burgdorferi. The purpose of this study was to determine whether the
accuracy of Lyme disease test results reported by approximately 500
participants in the Wisconsin State Laboratory of Hygiene/College of
American Pathologists Lyme Disease Survey had improved. From 1992 through
1994, 50 serum samples were sent to participants of the survey. Each
laboratory received 28 serum samples from individuals with Lyme disease
according to the case definition of the Centers for Disease Control and
Prevention and 22 serum samples from healthy individuals. Unfortunately,
the serodiagnosis of Lyme disease by participants had not improved. The
specificity of the Lyme disease assays steadily decreased from
approximately 95% to approximately 81% during the 3-year period of the
survey. False- positive test results approached 55% with some of the serum
samples from healthy donors. A serum sample containing antibody against
Treponema pallidum was reported as positive by 70% of the participants. In
addition, the sensitivity fluctuated between 93 and 75%, depending upon the
conjugate used by the laboratories. These results suggest that stronger
criteria must be applied for approving and continuing to approve
commercially available kits for the serodiagnosis of Lyme disease.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Interlaboratory comparison of test results for detection of Lyme disease by 516 participants in the Wisconsin State Laboratory of Hygiene/College of American Pathologists Proficiency Testing Program
Department of Continuing and Vocational Education, University of Wisconsin, Madison 53706, USA.
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