Osmolality is the concentration of all particles in a fluid. For example, thick, sugary syrup has significantly higher osmolality than a cup of water with just a pinch of sugar. The urine osmolality ...

A blood osmolality test measures the blood for the concentration of certain dissolved particles. This test can show whether a person has an irregular balance of fluids in their body. Osmolality tests ...

What is a Serum Osmolality Test? A serum osmolality test looks for a chemical imbalance in your blood. You may also hear it called an osmolality serum test. Serum is the fluid in your veins and ...