Radiolabelling

Radiolabelling is a powerful analytical technique used across chemistry, biology and pharmacology to trace the behaviour of molecules within complex systems. It involves replacing a stable atom in a compound with a radioactive isotope, creating a chemically equivalent molecule that can be detected with exceptional sensitivity. Common radionuclides include tritium, carbon-14, phosphorus-32, iodine-125, and fluorine-18, selected based on half-life, decay properties, and study requirements. Radiolabelled compounds enable detailed investigation of metabolic pathways, drug absorption and environmental transport. Detection methods such as liquid scintillation counting and positron emission tomography allow precise quantification at very low concentrations. Conducted under strict regulatory control, radiolabelling provides essential insight into molecular dynamics across scientific and medical research.

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