The Quantimetrix Complete D® 25-OH Vitamin D Control is now improved to be compatible, without the need for dilution, on major immunoassay platforms, including Roche Cobas® e411/Elecsys®, Ortho Vitros® ECi, Siemens Centaur® XP, Diasorin Liaison®, Abbott Architect™, and Beckman Access® 2. Values are also provided for LC-MS/MS, including the reference methods JCTLM #C8RMP3/4. This two level, ready-to-use, human serum based liquid control is traceable to the NIST standard SRM 972a. The product features a 3 year 2-8ºC shelf-life from date of manufacture and extended open vial stability of 1 year at 2-8ºC and 30 days at room temperature. Values for 25-OH Vitamin D2 and D3 are provided for research or international use only.