What is pre analytic?
The preanalytical phase is the phase where the laboratory has no direct control on the process. Preanalytical factors that can affect results include: sample type, sampling time, sample handling, patient’s preparation and the nutritional status of the patient. This will allow better interpretation of results.
What are pre analytical variables?
Preanalytical variables occur prior to specimen testing and may include variables involving the process of obtaining a specimen. Analytical variables occur during actual testing of the specimen.
What is analytical testing?
Analytical testing, which is also referred to as materials testing, is a broad term used to describe various techniques that are used to identify the chemical makeup or characteristics of a particular sample.
What are preanalytical errors?
Preanalytic errors are errors that occur prior to the testing process. Hemolyzed specimens, clotted specimens, incorrect tube type, and inadequate tube fill can all produce preanalytic errors.
What are pre-analytical variables discuss it with an example?
Under the broad umbrella of the preanalytical phase can be included specimen collection, handling and processing variables, physiological variables such as the effect of lifestyle, age, gender, pregnancy and menstruation and endogenous variables such as drugs and circulating antibodies.
What are laboratory variables?
Variables are an important part of an eye tracking experiment. A variable is anything that can change or be changed. In other words, it is any factor that can be manipulated, controlled for, or measured in an experiment.
What are the three phases of laboratory testing?
Total testing process in the laboratory is a cyclical process divided into three phases: preanalytical, analytical and postanalytical.
Why is analytical testing important?
“Analytical testing is required at all phases of development, and it is critical that this support is accurate and efficient,” says Eric J. Hill, MS, MBA, President, Impact Analytical. “It is used to verify drug chemistry, and therefore can be a barrier to moving to the next phase in the development process.”