Used in diagnostic assays to detect and quantify interferon alpha levels in clinical samples, aiding in the monitoring of autoimmune diseases such as systemic lupus erythematosus. Employed as a reference standard in immunoassay development to ensure consistency and accuracy across testing platforms. Supports research into antiviral immunity and interferon signaling pathways. Utilized in quality control for therapeutic interferon production and in evaluating the efficacy of biologic treatments that modulate interferon activity.