A COMPARATIVE ASSESSMENT OF THE EFFICIENCY OF HPLC COLUMNS AND CHROMATOGRAPHIC CONDITIONS IN LC-MS ANALYSIS OF DERIVATISED ESTROGEN HORMONES AND THEIR METABOLITES. Kashf J. Multidiscip. Res. [Internet]. 2025 Jan. 28 [cited 2025 Feb. 3];2(01):157-65. Available from: https://kjmr.com.pk/kjmr/article/view/231