Manoowong, Nopphadet. “Application of the delta check-first dilution principle to reduce turnaround time for blood magnesium level testing”. Thammasat University Hospital Journal Online 8, no. 2 (August 29, 2023): 53–61. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/TUHJ/article/view/263578.