In which document are the directions for running quality control for specific assays maintained?

The Operating Procedure Manual serves as a comprehensive guide that details the specific methods and protocols for various laboratory assays, including quality control procedures. This document typically includes step-by-step instructions for performing tests, the required reagents, equipment settings, and the standards for quality control checks that must be followed to ensure accurate and reliable results.

While the Quality Assurance Manual might include overarching quality policies and objectives, the Standard Operating Procedures generally outline specific practices for a variety of tasks within the lab, not just those limited to a particular assay. The Laboratory Instruction Manual, on the other hand, may contain more general information or guidelines but does not primarily focus on providing the detailed operations essential for maintaining quality control in assays.

Thus, the Operating Procedure Manual is the most appropriate choice for maintaining the directions necessary to ensure quality control for specific assays within a laboratory setting.