The magnesium test measures the amount of magnesium in your blood. Magnesium is needed for your nervous, gastrointestinal, and cardiovascular systems to work normally. Your body gets magnesium from certain foods.
The magnesium level in your blood may be measured to check your:
It may also be checked when your calcium and potassium levels are checked.
A small amount of blood is taken from your arm with a needle. The blood is collected in tubes and sent to a lab.
Having this test will take just a few minutes of your time.
Ask your healthcare provider when and how you will get the result of your test.
The normal range for adults in most labs is 1.25 to 2.5 milliequivalents (mEq) per liter. The normal range may vary slightly from lab to lab. Normal ranges are usually shown next to your results in the lab report.
Your blood level of magnesium may be higher than normal if:
Your blood level of magnesium may be lower than normal if:
Test results are only one part of a larger picture that takes into account your medical history and current health. Sometimes a test needs to be repeated to check the first result. Talk to your healthcare provider about your result and ask questions.
If your test results are not normal, ask your healthcare provider:
If your magnesium level is low, you can take supplements to bring it back up.