“…Over the years, the success of such policy options is strongly supported by the results of quality assessment schemes in other countries, including the United Kingdom, Taiwan, and the United States, where the performance of laboratories could be improved, particularly when guidance was provided to poorly performing laboratories (11,20,21,22). In addition, the use of standard preparations can increase accuracy levels Ն10% (21,22). Such interventions were successful in parameters like rheumatoid factor, parvovirus B19 serology, Lyme disease serology, and tick-borne encephalitis ELISA testing (3,7,10,21,22).…”