The magnesium blood test measures the level of magnesium, an essential mineral involved in muscle function, nerve signaling, bone health, and energy production. It is used to help diagnose magnesium deficiency or excess, which can occur due to conditions like malnutrition, kidney disease, or gastrointestinal disorders. Magnesium levels can also provide insights into metabolic or hormonal imbalances. Fasting is not required for this lab.

After order completion, a provider will submit your Lab Requisition Form to Labcorp, within 24 (business) hours. You will also be emailed a copy of your LRF to take to your nearest Labcorp with valid photo ID. Your results will be available in your Labcorp Patient Portal as soon as they become available, and we will securely email you a PDF copy. Email verification will be required, please check your spam folder.