WHO recommends that countries without testing capacity and whose national laboratories have limited experience with COVID-19 send their first five positive and first ten negative samples of COVID-19 to one of 16 WHO Reference Laboratories for confirmatory testing.
WHO inapendekeza kwamba mataifa yasiyo na uwezo kupima na mahabara ya kitaifa yenye uzoefu wa chini kuhusu COVID-19 yatume visa vitano vya kwanza vya kupatikana kwa ugonjwa na sampuli kumi za kwanza zisizo na COVID-19 katika mojawapo ya mahabara husika 16 ya WHO kwa ajili ya upimaji wa uthibitisho.