“…et.al., 2017). In the pre-analytical stage, the factors that affect the sample are samples contaminated by other substances or tools that have not been calibrated so that they can be affected by the results, the analytical stage of influencing factors are inappropriate sample treatment, incubation time, and mixing of reagents, and post-analytical factors that often occur are interpretation of results and recording of results so that the results issued are not appropriate (Savitri, S., 2015;Kustiningsih, Y. et.al., 2016;Sarihati, I. G. A. D.…”