Home Products Most Popular Contact
No items in your cart.
The page below is a sample from the LabCE course Introduction to Quality Control. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about Introduction to Quality Control (online CE course) »
How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 123 CE courses, most popular
$95 Add to cart
Pick Your Courses
Up to 8 CE hours
$50 Add to cart
Individual course$20 Add to cart

Intralaboratory (Internal) Quality Control

QC testing is performed within a laboratory to monitor and ensure the reliability of test results produced by the laboratory. Control materials (usually liquid controls) are used to monitor the test system and verify that quality patient test results have been attained. A control is a stabilized sample with a predetermined range of result values that simulates a patient sample.
Control samples are tested in the same way as patient samples. If the results from testing a control sample are not within the acceptable ranges, we assume there has been a problem in the test procedure, equipment, or the samples themselves. There are many criteria for rejecting a test based on the control samples measurements; these criteria will be detailed further in a later section. Patient results are not reported until the cause of the problem has been found, the problem resolved, and the controls retested to verify that everything is working normally.