HomeLab TestSerum Osmolality
Overview
Your body constantly loses water as you breathe, sweat, and urinate. When you don't drink enough water, your blood is enriched with chemicals, i.e., serum osmolality. The serum in your veins and arteries doesn't contain any blood cells. Serum osmo...
Risk assessment
The test checks the water balance of the body. The doctor orders the test if a patient shows symptoms like dehydration, low sodium level, problematic urination, poisoning from ethanol, ethylene glycol or methanol.
Ranges
275 to 295 mOsm/kg
Test result interpretation
-
Hyperosmolality (Serum osmolality > 300 mOsm/kg):
- Causes:
- Dehydration (due to inadequate fluid intake or excessive fluid loss)
- Hypernatremia (high sodium...
- Causes:
Sample types
Blood
Frequently Asked Questions
What do abnormal Serum Osmolality levels indicate?
How is Serum Osmolality measured?
Why is Serum Osmolality important?
How are abnormal Serum Osmolality levels managed?
Serum Osmolality
Navigating Fluid Balance for Comprehensive Health Assessment
Includes 1 Test
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Sample Type:
blood
Fasting Required:
No
Description
A serum osmolality test measures the amount of chemicals dissolved in the liquid part (serum) of the blood. Chemicals that affect serum osmolality include sodium, chloride, bicarbonate, proteins, and sugar (glucose). This test is done on a blood sample taken from a vein.