Fig. 2. (A, B) The Levey-Jennings control chart for the daily VALLEU and VALLY in two healthy individuals over 15 working days. Abbreviations: VAL, calculated values; NEU, neutrophils; LY, lymphocytes; SD, standard deviation.
Lab Med Qual Assur 2023;45:18~24 https://doi.org/10.15263/jlmqa.2023.45.1.18
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