This is a complete course on internal quality control in clinical laboratory. This course is targeted towards post graduate students of biochemistry, microbiology, and pathology. This course is also useful for medical laboratory professional and technical staff working the medical laboratories. This course is designed considering the beginners, intermediate as well as expert in the fields of clinical laboratory. This course includes the type of Quality Control material, Storage of Quality control material, reconstitution of Quality Control material. Here we have also included Statistics with respect to Internal Quality Control as well as L-J chart, Westgards Rule for analysis of internal quality control testing, Troubleshooting of Internal Quality Control Outliers and Internal Quality Control Data Review. This course also includes some of the important terminologies use in internal quality control such as accuracy, precision and bias. This course will be helpful to upgrade the knowledge in the field of clinical laboratory. Complete this course and get certified. Quality Control (QC) is defined as the process of detecting analytical errors to ensure both reliability and accuracy of the data generated. QC can be used to ensure the equipment is functioning properly, the reagents are good, and the technician is skilled at the analysis. QC involves a statistical evaluation of data and the use of quality control materials.