This test is used to evaluate Magnesium levels in red blood cells. Magnesium is a mineral / electrolyte that is important for strong bones and muscles, heart health, energy production, and nerve function. Magnesium levels are typically checked to evaluate kidney function, aid in the diagnosis of certain gastrointestinal disorders, or determine the severity of uncontrolled diabetes.
A Magnesium RBC test can provide an earlier indicator of Magnesium deficiency than a standard Magnesium blood test that most doctors order. When levels are low, the body will pull Magnesium from the cells to keep blood levels normal. In this case, a standard Magnesium blood test may show normal levels while a Magnesium RBC test will give a more accurate result.
A CMP test shows other electrolytes such as sodium, potassium, calcium, and chloride, but doesn’t include magnesium. Dehydration symptoms can occur due to electrolyte imbalances which includes all of these.
Electrolyte imbalances can result in one or more of these symptoms:
- Darker than normal color urine
- Irregular or faster-than-expected heart rate
- Muscle cramps, muscle spasms, or weakness
- Numbness or tingling in limbs, fingers, and toes
- Confusion and irritability
- Fatigue
- Headaches
- Dizziness, nausea and/or vomiting