Sun Diagnostics, LLC

Sun Diagnostics, LLC is a Maine-based in vitro diagnostic (IVD) products and solutions provider specializing in quality control materials and interference testing systems for laboratory medicine. The company develops customized QC materials designed for researchers, clinical laboratories, and diagnostic manufacturers. Their flagship product line, ASSURANCE™ Interference Test Kits, addresses a critical need in laboratory diagnostics by simplifying interference testing—evaluating how hemolysis, lipemia, and proteins affect assay performance. Sun Diagnostics manufactures human serum-based QC materials that more closely simulate patient samples compared to synthetic alternatives, enabling independent third-party validation of assay and instrument system performance. The company serves multiple customer segments: researchers developing home-brew assays, clinical laboratories performing independent quality assessment, and IVD manufacturers conducting product development and validation. With five product lines offering infinite customization options, Sun Diagnostics positions itself as a partner in advancing laboratory medicine through improved diagnostics. The company maintains a customer base of thousands of laboratory professionals across the United States. Based in Brunswick Hall, New Gloucester, Maine, Sun Diagnostics operates during standard business hours (M-F, 8am–5pm) and provides dedicated customer support via phone and email.