Serum or plasma concentration of electrolytes (e.g., sodium, potassium, chloride) measured by ion-selective electrode
This test measures key minerals in your blood that help regulate important body functions, such as fluid balance and nerve signaling.
["Essential for diagnosing conditions like dehydration, kidney issues, or electrolyte imbalances."]
Key facts at a glance
- LOINC
- 22294-3
- Short code
- EBV EA Ab Titr Ser
- Synonyms
- EBV EA Ab Titr Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
Your blood contains several important electrolytes, including sodium, potassium, chloride, and sometimes others like calcium or magnesium. These minerals help control how fluids move in and out of your cells, support nerve and muscle function, and maintain your body’s acid-base balance. This test typically includes measurements for sodium, potassium, chloride, and sometimes bicarbonate (a key part of blood chemistry).
Common Uses
Doctors often order this test to check for dehydration, kidney problems, heart conditions, or high blood pressure. It can also help monitor long-term conditions like diabetes or kidney disease. Sometimes, it’s part of a routine checkup to ensure your electrolytes are within healthy ranges.
How the Test Works
A small blood sample is taken from your arm and sent to a lab. Specialized instruments measure the levels of electrolytes in your blood plasma or serum. The results help your healthcare provider assess whether your body is getting the right balance of these minerals.
What to Expect Before the Test
There are usually no special preparations needed for this test. You may have some mild discomfort from the needle, but it’s a quick and common procedure. If you’re on certain medications or have a condition like kidney disease, let your doctor know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
None
Frequently asked questions
Electrolyte imbalances can cause symptoms like muscle weakness, confusion, irregular heartbeat, or even seizures. By monitoring these levels, doctors can prevent serious complications and adjust treatments like medications or diet as needed.
A normal result means your electrolyte levels are within the expected range for your age and health. However, what’s normal can vary slightly depending on the lab and your specific situation. Always discuss your results with your healthcare provider.
Your doctor will determine how often you need this test based on your health condition. Some people may need it monthly, while others may only need it once a year or less. Regular monitoring helps track changes over time.
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy