Chatchawal, P., Wongwattanakul, M., Thubthimngam, C., Yotsakullert, C. and Jearanaikoon, P. 2023. Establishment of reference intervals in biochemistry parameters from check-up records: AMS Medical Laboratory, Khon Kaen. Asia-Pacific Journal of Science and Technology. 29, 01 (Dec. 2023), APST–29. DOI:https://doi.org/10.14456/apst.2024.5.