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Fig. 1. The changes of level of in-house prepared external quality controls for autoimmune disease tests during a 6 month time period.Abbreviations: anti-dsDNA, anti-double stranded DNA immunoglobulin G antibody; anti-Tg, anti-thyroglobulin antibody; anti-TPO, anti-thyroperoxidase antibody; RT, room temperature (20℃–24℃).
Lab Med Qual Assur 2021;43:72~79
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