What Is In Vitro Diagnostics?

In vitro diagnostics is the process of diagnosing diseases or health conditions by analysing biological samples (such as blood, urine, saliva and tissue samples) in a laboratory, outside the human body. "In vitro" means "in glass" in Latin, and the term indicates that the tests are performed outside the body, usually in laboratory tubes or plates.

The main features and uses of in vitro diagnostics are:

• Diagnosis of Diseases: In vitro diagnostic tests are used for the early diagnosis of various diseases. For example, in vitro tests play a major role in diagnosing many diseases such as diabetes, cancer and infectious diseases.
• Monitoring Health Status: Used to monitor the health of the patient in the follow-up of chronic diseases. For example, regular checks of blood sugar or cholesterol levels.
• Genetic Tests: Used for the diagnosis of genetic diseases and the determination of genetic predispositions. For example, the detection of specific gene mutations.
• Detection of Infectious Diseases: Used for the detection of bacteria, viruses and other pathogens. They have been widely used in the diagnosis of infectious diseases such as COVID-19.
• Monitoring Drug Levels: Used to monitor the effectiveness and safety of drug therapy. For example, measuring the blood levels of certain drugs.

Common In Vitro Diagnostic Methods:

• Biochemical Analyses: Measuring specific chemical substances in biological fluids such as blood or urine.
• Molecular Diagnostics: Examining genetic material by DNA or RNA analysis. PCR (Polymerase Chain Reaction) is an example of this method.
• Immunological Tests: Tests based on antigen and antibody reactions. ELISA (Enzyme-Linked Immunosorbent Assay) is a common example.
• Haematology Tests: Counting and examining blood cells.
• Microbiological Cultures: Identifying microorganisms by growing them in a culture medium and determining their antibiotic susceptibility.

In vitro diagnostics increases the accuracy and speed of medical diagnosis and allows diseases to be managed more effectively through early diagnosis.