This affinity‑purified anti‑DYKDDDDK (FLAG) antibody provides a high‑specificity reagent for detecting FLAG‑tagged recombinant proteins across a wide range of expression systems. Produced in chicken and supplied at 1 mg, this antibody offers strong binding, low background, and excellent compatibility with ELISA, Western blotting, immunoprecipitation, and other FLAG‑tag detection workflows. Its affinity‑purified format ensures consistent performance and high signal‑to‑noise ratios, making it ideal for researchers requiring reliable detection of FLAG‑tagged constructs in protein expression, purification, and characterization studies. A versatile, high‑quality reagent for molecular biology and protein engineering applications.