Calibrators and Controls for Turbidimetry and Nephelometry
For Calibrators, value assignment has been carried out by turbidimetry using a meticulous protocol (1). The protein concentrations with uncertainties are provided in the Analytical Value Sheet included with each product. For Controls, values have been determined by repeated measurements and are provided with a recommended range. Values assigned to Calibrators and Controls are traceable to international reference preparations when such preparations are available.
For all Calibrators and Controls prepared from serum, each donor has been tested and found negative for hepatitis B virus surface antigen, anti-HIV 1 and 2, and anti-hepatitis C virus.
- Blirup-Jensen S, Johnson MA, Larsen M. Protein standardization IV: Value transfer procedure for the assignment of serum protein values from a reference preparation to a target material. Clin Chem Lab Med 2001;39:1110-22.
* Please note that X7912 and X7913 have not been validated for nephelometry.