Magnesium (24-Hour) Urine Test
Test Code: 003400
Specimen Type: Urine
Magnesium (24-Hour) Urine Test (Labcorp)
This test measures magnesium levels in a 24-hour urine sample. Magnesium is a mineral that plays an important part in a number of processes throughout the body including energy production, nerve function, healthy bone development, and muscle contraction. The body gets magnesium from foods such as green vegetables, whole grains, and nuts. The kidneys play a role in managing the body's magnesium levels by conserving magnesium when levels are low or excreting it when there is too much. Measuring the level of magnesium in the urine can help to determine whether a person has an overage or deficiency. It can also help to evaluate kidney function by checking if there is an abnormally high level of magnesium being excreted in the urine.
Magnesium urine levels may be ordered when a person has symptoms of magnesium deficiency such as muscle weakness, cramping, confusion, unusual hearth rhythm, or seizures. Magnesium testing may be done to help monitor kidney function in people with kidney disease or when they are taking medications that affect the kidneys. When it is related to kidney function, magnesium testing may be ordered along with other testing such as BUN or Creatinine. A Magnesium Blood Test is also available which can be helpful in evaluating malnutrition or disorders which prevent the body from properly absorbing nutrients.
Turnaround for this test is typically 1-3 business days.
Where can I find a Magnesium (24-Hour) urine test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
For 24-hour urine specimen: Obtain a specimen container and instructions from the draw site. Void at 8 AM and discard the specimen. Then collect all urine including the final void at the end of the 24-hour collection period (ie, 8 AM the next morning) in the specimen container. Screw the lid on securely and return the container promptly to the draw site.
If this test is being ordered along with any other blood and/or urine medical testing, it is recommended you have the specimen(s) for your other tests collected at the same time you bring the 24-hour urine specimen to the draw site.