Table. 2.

Reference materials used for international or nationwide external quality assessments

Scale Due date of data acquisition Reference material No. of samples No. of participating laboratories Reference
Nationwide, South Korea 31 March 2020 Cultured virus spiked to clinical specimen 10 118 [8]
Nationwide, Austria 26 May 2020 Clinical specimen 4 52 [9]
International, 36 countries Not specified (samples received between 6 April and 20 May 2020) Cultured virus 8 365 [10]
J Lab Med Qual Assur 2020;42:194~199 https://doi.org/10.15263/jlmqa.2020.42.4.194
© Lab Med Qual Assur