Hospital
$80+
Other Labs
$25
TestWell
$19.99
Magnesium is involved in over 300 enzymatic reactions in the body, including muscle and nerve function, blood sugar regulation, and blood pressure control. Despite its importance, an estimated 50% of Americans don't meet the recommended daily intake. Deficiency can cause muscle cramps, insomnia, anxiety, headaches, and irregular heartbeat.
Sample Type
Blood draw
Fasting
Not required
Results In
2–4 business days
Performed By
Labcorp
1 biomarker tested
Your Magnesium results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 2–4 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
No fasting required.
TestWell Price
$19.99
No insurance needed · HIPAA compliant
Frequently ordered together
Customers who ordered Magnesium also added these for a more complete health picture.
Complete blood count with white blood cell breakdown — the gold standard for overall blood health screening.
$21.99
The primary screening test for thyroid function — detects both overactive and underactive thyroid.
$26.99
Measures your body's iron stores — the most sensitive early indicator of iron deficiency.
$24.99
Magnesium
$19.99