In Vitro
At a glance: Testing performed outside a living body using cells, tissues, or laboratory systems.
“In vitro” (Latin for “in glass”) describes tests done outside a living organism, such as in a test tube or petri dish. 14 Its trade-off versus in vivo: in vitro allows more detailed analysis in more subjects, but cannot replicate conditions inside a living organism, so results do not necessarily predict the whole-organism response. 14 In vitro assays are the backbone of bioactivity testing in NGRA.