Use

This test is useful for evaluating acutely ill or comatose patients. Osmolality is a measure of the number of dissolved solute particles in a solution. It is not affected by the type of particles in solution but rather by their quantity. Changes in osmolality can affect the physical properties of biological solutions, such as osmotic pressure and freezing point. Serum osmolality levels are indicators of hydration status and can guide fluid replacement therapy, as an increase suggests dehydration and a decrease suggests overhydration. Carefully monitored in patients receiving intravenous fluids to maintain balanced electrolyte and water administration.