Southwest · Magnesium Levels Blood Test – Deficiency
Magnesium Levels Blood Test – Deficiency in New Mexico
Below is a plain-language overview of the magnesium levels blood test – deficiency. This blood test measures magnesium levels in the blood to help evaluate for deficiency or excess. Magnesium is a mineral involved in many biochemical processes.
Lab requirements in New Mexico
Here is what you need before ordering and completing the Magnesium Levels Blood Test – Deficiency in NM. Review each item and confirm the details with the collection lab.
- Physician's order
- Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
- Fasting
- Fasting is required for this test — follow the collection lab's instructions.
- Preparation
- Preparation instructions can vary, so follow the specific directions provided by the collection laboratory. This may include fasting or avoiding certain supplements before the test.
- Sample & visit
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Identification
- Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
- Turnaround
- 1-3 business days
- Availability
- Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.
Before you go
- Order your test before visiting a lab, then use the requisition form in your account.
- Print the requisition form, or fax it to the lab directly from your account.
- No scheduling is needed — visit the collection lab during its normal business hours.
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Bring a government-issued photo ID in case the lab requests it.
- Results are posted to your secure account within 1–3 business days.
Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.
What this test is
The magnesium levels blood test quantifies the amount of magnesium in the liquid portion of the blood, known as serum. It is used to assess magnesium status and can help identify imbalances that may affect nerve, muscle, and heart function.
What it measures
- Serum magnesium — Reflects the amount of magnesium circulating in the blood
What the test involves
A healthcare professional collects a blood sample by inserting a needle into a vein, usually in the arm. The sample is then processed in a laboratory to measure the magnesium concentration.
Why it is often ordered
A clinician may order this test if symptoms suggest a magnesium imbalance, such as muscle cramps, weakness, or irregular heartbeats. It can also be used to monitor conditions or medications that affect magnesium levels.
Preparation
Preparation instructions can vary, so follow the specific directions provided by the collection laboratory. This may include fasting or avoiding certain supplements before the test.
How results are reported
Results are typically reported as a numerical value that is compared to a reference range. Reference ranges can differ between laboratories, so the range provided with your report is the one to use.
Before you go
- Whether fasting is required before the test
- If any medications or supplements should be avoided
- The expected turnaround time for results
Cities
Magnesium Levels Blood Test – Deficiency in New Mexico communities
Choose your city for local context and to order this test.