OPTIMIZATION OF DEPROTEINIZATION METHODS, HPLC METHOD DEVELOPMENT AND VALIDATION FOR QUANTIFICATION OF 6Β-HYDROXYTESTOSTERONE IN CELL CULTURE MEDIA. J. Teknol. [Internet]. 2023 Nov. 18 [cited 2024 Dec. 19];86(1):25-34. Available from: https://journals.utm.my/jurnalteknologi/article/view/19861