isobaric tagging

Isobaric tagging is a quantitative proteomics strategy that uses chemical labels such as TMT and iTRAQ to enable multiplexed protein quantification across multiple samples in a single mass spectrometry run. This tag covers discussions comparing isobaric tagging with label-free quantitation (LFQ) and metabolic labeling like SILAC, focusing on experimental design, budget, statistical power, and biological conclusions. Key themes include the trade-offs between multiplexing capacity, accuracy, and cost, as well as the impact on downstream bioinformatics. The content is aimed at researchers and lab managers evaluating quantitative proteomics workflows.