In vitro testing occurs in a laboratory and usually involves studying microorganisms or human or animal cells in culture. This methodology allows scientists to evaluate various biological phenomena in specific cells without the distractions and potential confounding variables present in whole organisms.

What is vitro testing method?

A test performed in vitro ("in the glass") means that it is done outside of a living organism and it usually involves isolated tissues, organs or cells. In vitro methods are divided to those that meet internationally agreed validation criteria and to those that do not. ...

What is tested in in vitro studies?

In vitro (meaning in glass, or in the glass) studies are performed with microorganisms, cells, or biological molecules outside their normal biological context. ... In contrast to in vitro experiments, in vivo studies are those conducted in living organisms, including humans, and whole plants.