“COMPARISON OF EXAMINATION OF SODIUM ELECTROLYTE LEVELS IN SERUM USING RED CAP VACUUM TUBES AND YELLOW CAP VACUUM TUBES AT TOTO KABILA HOSPITAL BONE BOLANGO DISTRICT”, JHTS, vol. 3, no. 3, hlm. 84–93, Sep 2022, doi: 10.47918/jhts.v3i3.913.