What is Serum Osmolality?

Serum osmolality measures the concentration of dissolved particles (solutes) in the blood, including electrolytes, glucose, and urea.‍ It reflects the body’s water balance and its ability to regulate hydration and solute levels.

What does it assess?

This test is commonly used to investigate hydration status, electrolyte imbalances, and potential cases of poisoning or kidney dysfunction.‍ It also helps diagnose conditions like diabetes insipidus or syndrome of inappropriate antidiuretic hormone (SIADH).

How do I optimize my Serum Osmolality?

Staying well-hydrated, managing blood sugar, and balancing salt intake support optimal serum osmolality.‍ Avoiding excessive alcohol or dehydration due to illness or exercise can also maintain healthy levels.

What do high and low Serum Osmolality levels mean?

High serum osmolality suggests dehydration, high blood sugar, or toxin presence.‍ Low levels may reflect overhydration or impaired kidney function.‍ Accurate interpretation requires clinical context and related lab markers.