Magnesium (Serum)
Essential mineral for muscle, nerve, and heart function. Low magnesium can cause cramps, arrhythmias, and seizures.
Test Information
Reports In
Same day (6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Serum magnesium level
Identifies
Hypomagnesemia, hypermagnesemia, kidney disease, cardiac arrhythmias, muscle cramps
What is the Magnesium Test?
Serum Magnesium measures this essential mineral involved in over 300 enzyme reactions in your body — including muscle and nerve function, blood sugar control, blood pressure regulation, and protein synthesis. Magnesium deficiency is common but often overlooked.
Why Should You Take This Test?
Magnesium affects potassium and calcium. Low magnesium is common with diuretics, alcohol, and diarrhea. Can contribute to refractory hypokalemia.
Who Should Get Tested?
Muscle Cramps/Spasms
Low magnesium is a common cause.
Diabetic Patients
Diabetes increases magnesium loss through urine.
On Diuretics or PPIs
These medications deplete magnesium.
Heart Rhythm Problems
Magnesium affects cardiac electrical conduction.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside Magnesium for a complete picture
Calcium
Low magnesium causes low calcium
Potassium
Magnesium deficiency makes potassium hard to correct
ECG
If arrhythmia is suspected
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