Venereal Disease Research Laboratory Field Consultation Services

Changing Patterns in Syphilis Serology in Public Health Laboratories

“…In the 1955 Serologic Evaluation Study, 78.3 percent of the labora¬ tories performing the VDEL slide test had satisfactory reproducibility of test results on duplicate serum specimens, and in the 1960 study, 98 percent of the laboratories were satis¬ factory. (15). On-the-job training is frequently accomplished during the visits.…”