Which technique is used to monitor clot formation by measuring turbidity?

Which technique is used to monitor clot formation by measuring turbidity?

• A. Turbidimetry
• B. Nephelometry
• C. Reflectance photometry
• D. Electrophoresis

Answer: (A)

Monitoring clot formation through turbidity relies on the fact that as a clot develops, the sample becomes cloudier and light transmission changes. Turbidimetry measures the amount of light that passes through the sample (transmitted light). As turbidity increases during clot formation, more light is attenuated, and the instrument records a change over time that reflects the rate and extent of clotting. This direct measurement of transmitted light is why turbidity-based monitoring is used for tracking clot formation. Nephelometry also relates to cloudiness but detects light scattered at a specific angle, which can be more sensitive for very small particles but is a different readout from turbidity. Reflectance photometry relies on light reflected from a surface rather than transmitted through a solution, and electrophoresis separates molecules by charge and mobility rather than measuring turbidity.

Monitoring clot formation through turbidity relies on the fact that as a clot develops, the sample becomes cloudier and light transmission changes. Turbidimetry measures the amount of light that passes through the sample (transmitted light). As turbidity increases during clot formation, more light is attenuated, and the instrument records a change over time that reflects the rate and extent of clotting. This direct measurement of transmitted light is why turbidity-based monitoring is used for tracking clot formation.

Nephelometry also relates to cloudiness but detects light scattered at a specific angle, which can be more sensitive for very small particles but is a different readout from turbidity. Reflectance photometry relies on light reflected from a surface rather than transmitted through a solution, and electrophoresis separates molecules by charge and mobility rather than measuring turbidity.