A COMPARATIVE ASSESSMENT OF THE EFFICIENCY OF HPLC COLUMNS AND CHROMATOGRAPHIC CONDITIONS IN LC-MS ANALYSIS OF DERIVATISED ESTROGEN HORMONES AND THEIR METABOLITES. Kashf Journal of Multidisciplinary Research, [S. l.], v. 2, n. 01, p. 157–165, 2025. DOI: 10.71146/kjmr231. Disponível em: https://kjmr.com.pk/kjmr/article/view/231. Acesso em: 3 feb. 2025.