In nephelometry, what does the instrument detect?

Prepare for the Clinical Chemistry Automation Test with a comprehensive practice quiz. Study with detailed explanations and multiple choice questions to enhance your understanding and boost your confidence. Ace your exam with our prepared material!

Nephelometry detects light that is scattered by particles in a suspension. The instrument relies on measuring the light that bounces off the particles, not the light that goes straight through or is absorbed. To maximize the signal from scattered light and minimize the unscattered beam, the detector is positioned at a right angle to the incident light. The intensity of the scattered light correlates with particle concentration and size, allowing quantification of turbidity or immune complexes in the sample. This differs from measurements of transmitted light (used in photometry) or absorbed light, which do not specifically quantify scattering.