Center for Disease Control Diagnostic Immunology Proficiency Testing Program results for 1977

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Abstract
A summary of the yearly data accumulated and analyzed in the diagnostic immunology portion of the Center for Disease Control 1977 Proficiency Testing Program provides information on the trends in testing protocols from over 900 participating laboratories. One hundred and fourteen specimens prepared by the Center for the Disease Control were distributed quarterly or in special surveys. The specimens chosen provided feedback from a broad range of tests commonly performed in diagnostic immunology laboratories and included those for rubella antibodies, hepatitis B surface antigen, bacterial antibodies, rheumatoid factor, immunoglobulins and other serum-specific proteins, syphilis serology, and carcinoembryonic antigen. This summary provides an overview of the trends observed since last year's report.