Vesi-Ref CD63-GFP is a highly characterized, fluorescent extracellular vesicle (EV) reference material engineered to bring certainty and reproducibility to your nanoparticle analysis workflow. Derived from HEK293 cells, this lyophilized standard allows you to validate instrument performance and establish robust analytical limits for measuring EV size, concentration, and fluorescence-based biomarkers. By providing a reliable positive control, Vesi-Ref CD63-GFP ensures that your analytical methods are correctly calibrated, enabling accurate and reproducible characterization of your EV samples.