Behavior of frozen serum pools and lyophilized sera in an external quality-assessment scheme.


To further improve analytical accuracy in clinical chemistry, proficiency testing needs amelioration in the quality of materials tested and in target value assignment. To obtain information on the actual state-of-the-art in the Lombardy region of Italy, and to examine the behavior of different types of control materials (fresh-frozen human sera and… (More)


3 Figures and Tables