Magnesium

A magnesium blood test measures the amount of magnesium in a sample of your blood. Magnesium is a mineral that you get from many kinds of foods you eat. Some examples include nuts, seeds, beans, fortified breakfast cereals, green leafy vegetables, and milk.

A magnesium blood test is used to check the level of magnesium in your blood.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

13 published ranges, each from a named source

1.62.6 mg/dL drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)

17 y+: 1.7–2.3 mg/dL
Normal: 1.6–2.6 mg/dL

Ranges from American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).

All source ranges (13)

Source	Sex	Age	Range
American Board of Internal Medicine (Laboratory Test Reference Ranges)	All	all ages	1.6–2.6 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	≤ 2 y	1.6–2.7 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	≤ 2 y	1.6–2.7 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	3 y – 5 y	1.6–2.6 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	3 y – 5 y	1.6–2.6 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	6 y – 8 y	1.6–2.5 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	6 y – 8 y	1.6–2.5 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	9 y – 11 y	1.6–2.4 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	9 y – 11 y	1.6–2.4 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	12 y – 17 y	1.6–2.3 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	12 y – 17 y	1.6–2.3 mg/dL
Mayo Clinic Laboratories (Test Catalog)	All	17 y+	1.7–2.3 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	17 y+	1.7–2.3 mg/dL

What moves it

cited guidance. not medical advice

Magnesium — address deficiency when low · National Institutes of Health - Office of Dietary Supplements

What an abnormal result can be associated with

A high result: Hypermagnesemia
A low result: Hypomagnesemia

Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.

details

Sample: Serum or plasma · LOINC
Collection: Serum gel tube · 0.5 mL · Mayo Clinic Laboratories (Test Catalog)
Part of: Bryan Johnson Blueprint
Listed under: Fluid and Electrolyte Balance · High Blood Pressure in Pregnancy
Code: LOINC 19123-9 · mg/dL
Also known as: Magnes, MAG

See your own Magnesium Add a lab report and it is drawn against your lab's range, over time. Upload a Blood Test