This mouse monoclonal antibody provides highly specific detection of human Beta‑2‑Microglobulin (β2M), a key component of MHC class I molecules and an important biomarker in immunology, oncology, and renal function studies. Clone 500 delivers strong affinity and low background, supporting sensitive detection in ELISA, Western blotting, flow cytometry, and antigen‑capture assays. Its clean, reproducible signal makes it suitable for quantitative assays, impurity monitoring, and characterization of β2M expression in cell‑based or purified samples. MB2‑80A‑500 offers consistent lot‑to‑lot performance, enabling reliable integration into research and diagnostic development workflows