Your doctor may recommend this test if you show symptoms of magnesium overdose/poisoning (hypermagnesemia), which are:
- Slow heart rate
- Low blood pressure
- Extreme fatigue, muscle fatigue
- Body ache
- Difficulty in breathing
If not treated timely, it can lead to abnormal heart rhythm, resulting in cardiac arrest or death. Additionally, your healthcare provider may order this test periodically if you have a kidney disorder (kidney failure), hypothyroidism, disease of adrenal glands, depression or if you are on certain antipsychotic medications like lithium therapy. It helps to monitor if you are retaining or excreting excessive quantities of magnesium.
Another purpose of this test is to check if you suffer from hypomagnesemia or magnesium deficiency.
In this, you may experience symptoms such as
- Loss of appetite
- Personality changes
If the deficiency continues, you may suffer from seizures, irregular heart rhythms, muscle cramps, and numbness. Other problems for which doctors use this test are:
- Chronic low calcium and potassium levels
- Malnutrition or malabsorption problems
Kidney problems, diabetes, or chronic diarrhoea