The term "bioanalytical" refers to a branch of analytical chemistry that deals with the analysis and measurement of biological molecules, such as proteins, nucleic acids, hormones, and metabolites. It involves techniques for detecting, quantifying, and identifying these molecules in biological samples, using methods like chromatography, spectroscopy, and immunoassays. Bioanalytical chemistry is essential for understanding the function of biomolecules in living organisms, as well as for developing diagnostic tools and therapeutic agents.