In vitro diagnostic test — example.

In vitro diagnostic test — example.

• A. PCR
• B. ELISA
• C. Microbiology culture
• D. Imaging

Answer: (C)

In vitro diagnostic tests are those performed on samples taken from a patient, outside the body, to detect disease markers or pathogens. A microbiology culture is a classic example because it involves taking a clinical specimen and growing any present microorganisms in laboratory media. This growth allows direct identification of the organism and enables further testing such as antibiotic susceptibility, which is the hallmark of traditional culture-based diagnostics. Imaging, by contrast, visualizes structures or function inside the body and is not an in vitro test. While molecular methods like PCR or serology (ELISA) are also done in the lab on patient samples, they detect genetic material or antibodies rather than rely on culturing organisms, so they represent different in vitro approaches rather than the traditional culture demonstration.

In vitro diagnostic tests are those performed on samples taken from a patient, outside the body, to detect disease markers or pathogens. A microbiology culture is a classic example because it involves taking a clinical specimen and growing any present microorganisms in laboratory media. This growth allows direct identification of the organism and enables further testing such as antibiotic susceptibility, which is the hallmark of traditional culture-based diagnostics. Imaging, by contrast, visualizes structures or function inside the body and is not an in vitro test. While molecular methods like PCR or serology (ELISA) are also done in the lab on patient samples, they detect genetic material or antibodies rather than rely on culturing organisms, so they represent different in vitro approaches rather than the traditional culture demonstration.