Sun Diagnostics simplifies interference testing with the ASSURANCE™ product line. The ASSURANCE™ interferents are high quality, highly concentrated materials from human sources (where possible) or purified chemicals, and are available as kit or individual vials to best match users’ needs. Available: triglyceride-rich lipoproteins, hemolysate, protein, bilirubin, rheumatoid factor acetylcysteine, ampicillin Na, cefoxitin Na, doxycycline HCl, theophylline, levodopa, methyldopa, metronidazole, acetylsalicylic acid, ibuprofen, phenylbutazone, rifampicin, cyclosporine, acetaminophen and heparin.