Boisxo‘jayeva Adibaxon Anvarovna, Xalilova Nilufar Shuxratillayevna and Usmanalieva Zumrad Uktamovna 2026. Identification of The Composition of Substances Isolated from A Biological Fluid (Urine) Using IR Spectrophotometry and Gas Chromatography–Mass Spectrometry Methods. American Journal Of Biomedical Science & Pharmaceutical Innovation. 6, 04 (Apr. 2026), 54–58. DOI:https://doi.org/10.37547/ajbspi/Volume06Issue04-09.