👉 Opsonometry is a medical procedure that involves using an optical device to measure the concentration of a specific substance in a fluid. The most common type of opsonometry used is the osmosis method, which uses the principle of solubility differences between two substances to determine their concentrations. In this procedure, a special type of optical fiber or lens is placed in a solution containing one substance that can be dissolved by an osmotic pressure gradient. The concentration of the substance in the fluid is
