International Journal of Pharmacy and Analytical Research https://ijpar.com/ijpar ijpar en-US (Prof. Dr. N.Sriram, ) ijparjournal@gmail.com (Prof. Dr. N.Sriram, ) Tue, 06 Jan 2026 14:39:52 +0000 OJS 3.3.0.11 http://blogs.law.harvard.edu/tech/rss 60 IMMUNOASSAYTECHNIQUES: PRINCIPLES, CLASSIFICATION, ADVANCEMENTS, AND APPLICATIONS—A COMPREHENSIVE REVIEW https://ijpar.com/ijpar/article/view/1039 <p>Immunoassay techniques are powerful analytical tools that exploit the high specificity of antigen–antibody interactions for qualitative and quantitative analysis of biological molecules. These techniques play a crucial role in clinical diagnostics, pharmaceutical analysis, biomedical research, food safety, and environmental monitoring. Over the years, immunoassays have evolved from classical radioimmunoassays to highly sensitive chemiluminescent, fluorescence-based, biosensor-coupled, and point-of-care systems. This review provides a comprehensive discussion on the principles, classification, working mechanisms, advantages, limitations, recent advancements, and applications of various immunoassay techniques, supported by updated scientific references.</p> Venkatesh. S, L.V.Vigneshwaran, Mohamed Ishaq Mushrif M.N.L, Jothi Sree.S, Abinaya.M, Vinotha.S Copyright (c) 2026 https://ijpar.com/ijpar/article/view/1039 Tue, 06 Jan 2026 00:00:00 +0000