Quality System Essentials (QSEs) Form the Basis of a Laboratory's

Quality system essentials (QSEs) form the basis of a laboratory's quality management system (QMS) and contain the management information needed for a laboratory to perform quality work. Which of the following items might be studied as part of an examination of a laboratory's process control?

A) The amount of the laboratory's process control budget
B) Quality control results and statistics
C) Records of the number of unacceptable specimens
D) Samples of reference ranges supplied with test results