Osmolality blood test
What is an Osmolality Blood Test?
An osmolality blood test is used to measure the osmolality of the blood, which pertains to the number of solute particles dissolved in the blood. The concentrations of the electrolytes in your blood can help your healthcare provider diagnose possible health concerns. The most common osmolality test is referred to as a serum osmolality test, which measures the osmolality of the clear liquid component of your blood. Serum osmolality helps indicate if too much or too little electrolyte is present in the blood.
Preparation for Osmolality Blood Test
No special preparation is usually necessary for an osmolality blood test. Your healthcare provider will provide you with a workup before you go in for the test and may order a standard blood test prior to the osmolality test. To help ensure accurate results, tell your healthcare provider of any medications, vitamins, or supplements you are taking.
Procedure for Osmolality Blood Test
To have your osmolality blood test completed, your healthcare provider will draw a sample of your blood. The sample will be sent to a lab where it will be tested to determine the osmolality. The result of the test will be forwarded to your healthcare provider who will interpret the results.
Types of Osmolality Blood Test
The two main types of osmolality blood tests are:
- Serum Osmolality Test –Measures the osmolality of the clear liquid component of the blood
- Whole Blood Osmolality Test – Measures the osmolality of the blood and all the cellular components it includes
Risks and Complications Associated with Osmolality Blood Test
For most people, a simple blood draw for an osmolality test is considered relatively low risk. The most common risks of a blood draw are:
- Bruising or light bleeding at the injection site
- Lightheadedness or fainting
- Infection
Why Do You Need An Osmolality Blood Test?
An osmolality blood test is used to measure the number of solute particles dissolved in your blood. The concentrations of the electrolytes in your blood can help your healthcare provider diagnose possible health concerns. Measuring the osmolality of your blood may also help monitor or identify any abnormal sodium levels or diagnose any underlying metabolic disorders or endocrine issues.
When you Need An Osmolality Blood Test?
An osmolality blood test is generally ordered when your healthcare provider is looking to diagnose potential health issues, such as:
- Diabetes
- Dehydration
- Malnutrition
- Liver or kidney disorders
- Urea cycle disorders
- Excess alcohol consumption
- Electrolyte imbalance or disturbances
- Metabolic acidosis
- Excessive vomiting or diarrhea