Analysis of the November 3, Performance Evaluation Testing Results for Human T-lymphotropic Virus Types I and II Antibody

This report is an analysis of results provided to the Centers for Disease Control and Prevention (CDC) by participant laboratories in the Model Performance Evaluation Program (MPEP) after they tested the human T-lymphotropic virus types I and II (HTLV-I/II) performance evaluation samples shipped to them on November 3, 1997. Testing results for this analysis were provided by 185 (96.9%) of 191 laboratories sent sample panels. Three laboratories returned result booklets with no testing results, and two laboratories returned results more than three weeks past the cutoff date. Data from these 5 laboratories are not included in this report. The testing results reported by the participant laboratories reflect their testing performance using manufactured kits to test performance evaluation samples and do not necessarily reflect an evaluation of these manufactured kits. Note that results from laboratories using the Abbott HTLV-I EIA kit are labeled, “Abbott”, as in previous reports, whereas results from laboratories using the new Abbott HTLV-I/ HTLV-II EIA kit are labeled “Abbott HTLV-I/HTLV-II”.