What is the osmolality (serum) lab test?
An osmolality (serum) lab test detects chemical imbalance in the blood. This test also identifies fluid imbalance in the body.
Why is the osmolality (serum) lab test done?
An osmolality (serum) lab test is done in order to:
- Check the balance of water and certain chemicals in the blood,
- Diagnose poisoning,
- Diagnose dehydration,
- Diagnose overhydration,
- Diagnose diabetes insipidus.
What does an osmolality (serum) lab test measure?
An osmolality (serum) lab test measures the concentration of particles and minerals dissolved in the serum. Serum is the liquid part of the blood.
Are there any risks associated with this test?
There are no known risks associated with this test.
How should I prepare for this test?
No special preparation is needed for this test.
What does osmolality mean in a blood test?
Osmolality is a test that measures the concentration of all chemical particles found in the fluid part of blood.
What causes low serum osmolality?
Low serum osmolality is caused by overhydration, hyponatremia, or paraneoplastic syndromes.
Why is serum osmolality high in diabetes insipidus?
Serum osmolality is raised in diabetes insipidus because of excess free water loss.
Normal serum osmolality for adults is 285-295 mOsm/kg.
Normal serum osmolality for children is 275-290 mOsm/kg.
An osmolality (serum) lab test is done in order to:
- Check the balance of water and certain chemicals in the blood,
- Diagnose poisoning,
- Diagnose dehydration,
- Diagnose overhydration,
- Diagnose diabetes insipidus.