Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of In vitro
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
In vitro: In glass, as in a test tube. An in vitro test is one that is done in glass or plastic vessels in the laboratory. In vitro is the opposite of in vivo.
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