Test library
Electrolyte And Mineral Panel
An electrolyte panel measures minerals such as sodium, potassium, chloride, and bicarbonate in the blood. It helps evaluate fluid balance and related body functions.
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Order Electrolyte Panel- Typical turnaround
- 1-3 business days
- Starting price
- From $118
- Results
- Confidential, online
Quick answer
An electrolyte panel is a blood test that measures the levels of key minerals and related compounds in the body, including sodium, potassium, chloride, and bicarbonate. It is often part of a routine blood chemistry check or ordered when a provider is evaluating hydration, medication effects, or symptoms such as weakness or irregular heartbeat. Results are interpreted by a qualified healthcare provider.
What this test measures
Electrolytes are minerals that carry an electrical charge and help regulate fluid balance, nerve signaling, and muscle function. The panel measures sodium, potassium, chloride, and bicarbonate, and it may calculate an anion gap from those values. Results outside reference ranges can reflect shifts in hydration, kidney function, or acid-base balance.
The test uses a serum or plasma sample collected from a vein, and it is often included within a basic metabolic panel or comprehensive metabolic panel. Extended versions may add calcium, magnesium, and phosphate. Fasting may be requested when glucose is part of the same panel, but not for the electrolytes themselves.
People may order an electrolyte panel during a routine check, when feeling dehydrated or unwell, when monitoring the effects of certain medications, or when a provider is evaluating kidney or hormonal concerns. Results need context because many factors influence electrolyte levels. A qualified healthcare provider should interpret the findings and determine whether follow-up is needed.
- Sodium
- Potassium
- Chloride
- Bicarbonate (CO2)
- Anion gap (calculated)
- Calcium (when included)
- Magnesium (when included)
- Phosphate (when included)
- Glucose (metabolic panel component)
- Kidney markers BUN and creatinine (when included)
Why people order this test
- Routine blood chemistry evaluation
- Assess hydration-related concerns
- Investigate muscle weakness or cramps
- Monitor effects of certain medications
- Support kidney-related evaluation
- Review acid-base balance with a provider
How to prepare
Fasting may be requested if glucose or other components of a metabolic panel require it; the electrolytes themselves do not need fasting. A blood sample is collected from a vein. Follow the instructions provided with your order.
Understanding your results
Results are generally available within 1-2 business days. Values are compared with laboratory reference ranges, and significantly abnormal results may be flagged for prompt review. A qualified healthcare provider should interpret results in the context of your health and any medications.
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Frequently Asked Questions
What does an electrolyte panel measure?
It measures sodium, potassium, chloride, and bicarbonate, and may calculate an anion gap. Extended versions can include calcium, magnesium, and phosphate.
Do I need to fast?
Fasting is not required for the electrolytes themselves, but it may be requested if glucose or other components are part of the same panel.
What is the difference between a basic and comprehensive metabolic panel?
Both include electrolytes. The comprehensive version adds more markers, typically including liver-related tests.
What can affect electrolyte levels?
Hydration, kidney function, medications, vomiting, diarrhea, and hormonal factors can all influence electrolyte levels, which is why a provider interprets results in context.
Are these results a substitute for a provider evaluation?
No. They are measurements that a qualified healthcare provider interprets as part of a complete assessment.
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