Knowledge Hub

Intermediate Laboratory Quality Assurance

Quality Assurance, Quality Control, and the Laboratory Quality Management System

A detailed guide to understanding quality assurance, quality control, and the quality management system and how they work together to ensure reliable laboratory results.

11 min read Open

Intermediate Laboratory Quality Assurance

Westgard Rules: Principles of Internal Quality Control

A practical guide to Westgard multirule quality control procedures, including 1₂s, 1₃s, 2₂s, R₄s, 4₁s, and 10x rules, their interpretation, error detection, and appropriate QC actions.

20 min read Open

Beginner General Laboratory

Understanding Laboratory Test Results

An educational overview of how laboratory results relate to reference information, method, specimen quality, and clinical context.

5 min read Open

Intermediate Laboratory Quality Assurance

Quality Control in the Medical Laboratory

An introduction to internal quality control, control materials, monitoring, and investigation of analytical performance.

6 min read Open

Beginner Laboratory Quality Assurance

Accuracy vs Precision in Laboratory Testing

Learn the difference between accuracy and precision and why both are important in laboratory measurement performance.

4 min read Open

Beginner Laboratory Quality Assurance

Pre-analytical, Analytical and Post-analytical Phases

Explore the three major phases of laboratory testing and common activities in each phase.

5 min read Open

Beginner General Laboratory

The Laboratory Testing Process

An overview of how a laboratory test moves from patient preparation and specimen collection through analysis and reporting.

5 min read Open

Beginner General Laboratory

Introduction to Molecular Diagnostics

An introduction to molecular diagnostic methods used to detect and characterize nucleic acids and other molecular targets.

5 min read Open