After accreditation is achieved, a laboratory must demonstrate continued excellence in all areas where testing is offered. Testing varies for the different areas of the laboratory. For hematology, it may involve review of kodachrome slides demonstrating different blood cells. In chemistry, serum samples are provided and the appropriate tests are evaluated. The answers are submitted to the agency, graded, and then returned.
Any wrong answer requires a written explanation.
Failure of the testing may lead to a site visit by the inspecting agency. Your laboratory results are also compared to all of the laboratories participating in the testing to assure the testing is fair and also to provide a measure of accuracy. Summary It may come as a surprise to many of you how highly regulated the laboratory is. The modern laboratory requires state of the art equipment directed by state of art people. You cannot trust your laboratory results with anything less.