“COMPARISON OF TOTAL CHOLESTEROL LEVELS IN SAMPLES SERUM TO BE CHECKED IMMEDIATELY AND SERUM SAMPLE WHICH WAS POSTPONED FOR 7 DAYS IN THE REFRIGERATOR WITH A TEMPERATURE OF 2-8°C AT BHAYANGKARA HOSPITAL”, JHTS, vol. 7, no. 2, hlm. 106–117, Jun 2026, doi: 10.47918/kdv97t04.