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Magnesium is essential for body functions, and imbalances can cause serious health issues. It is important to know when to test and how to interpret the results.
Magnesium is a vital mineral that plays a crucial role in numerous processes within the body.
It is essential for energy production, muscle contraction, nerve function, and maintaining strong bones. Magnesium also helps regulate blood sugar levels and supports a healthy immune system.
Abnormal magnesium levels, either too high or too low, can indicate issues with nutrient absorption, kidney function, or chronic health conditions.
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Magnesium testing is suggested when there are signs of imbalance or to check general health, especially in older adults.
A doctor may recommend magnesium testing in the following situations:
Magnesium tests are also part of regular check-ups for people over the age of 45. It is especially important for people at risk of heart disease, diabetes, or kidney issues.
Magnesium levels are usually measured through a blood test, specifically using a venous blood sample. This test is often included in broader health panels, such as a Complete Metabolic Panel (CMP) or a specific magnesium blood test. In addition, nutritional tests can assess magnesium levels to help identify deficiencies related to diet.
Here are the most common methods to test magnesium:
Normal magnesium levels vary by age and are measured in milligrams per deciliter (mg/dL). The standard ranges for blood serum magnesium levels are as follows:
Children:
Adults (over 17 years old): 1.7–2.3 mg/dL
Magnesium levels in urine from a 24-hour sample typically range between 24 and 255 mg per day, depending on dietary intake and other factors.
Note: The units of measurement and the normal ranges can differ depending on the laboratory and the specific methods used.
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Abnormal magnesium levels, whether too high or too low, can indicate underlying health issues that require medical attention. Both extremes can have serious effects on the body, from muscle cramps to heart problems.
High magnesium levels, also known as hypermagnesemia, can occur when too much magnesium builds up in the body. This usually happens due to excessive intake or the body's inability to eliminate it.
Possible causes of high magnesium levels include:
Low magnesium levels, or hypomagnesemia, are more common and often linked to a variety of lifestyle and health factors.
Possible causes of low magnesium levels include:
If your magnesium levels are abnormal, you may need to consult a specialist depending on the root cause of the imbalance. The following healthcare providers can help:
This article was written by doctors from the Docus Medical Research team and reviewed by leading neurology and cardiology experts. We relied on academic studies, medical research, and publications from credible sources to ensure the information provided is accurate and trustworthy.
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