Wahyuni Tarigan , S., Frimpong Oppong, R., Lubis, J., Pakpahan, R., & Doortua, D. (2021). DIFFERENCES IN BLOOD GLUCOSE LEVELS BY USING EDTA’S SERUM AND PLASMA WAS EXAMINED IMMEDIATELY AND POSTPONED 2 HOURS AT EFARINA BERASTAGI HOSPITAL. International Conference on Health Science, Green Economics, Educational Review and Technology, 3(1), 213–222. https://doi.org/10.54443/ihert.v3i.120