ResourceLife Sciences
An accurate and simple spectrophotometric assay system for quantitation of biotin
9 Mar 2026Learn all about the QuantTag™ Biotin Kit, a spectrophotometric assay designed for accurate and simple quantitation of biotin labels on biomolecules. This white paper compares the QuantTag assay with the traditional avidin-based HABA method and mass spectrometry, demonstrating that QuantTag provides results closely aligned with mass spectrometry while avoiding steric hindrance issues and eliminating the need for enzymatic sample digestion. The method offers a faster and more reliable approach for optimizing biotinylation reactions in proteins and other biomolecules.