Magnesium, Blood is a topic covered in the Davis's Lab & Diagnostic Tests.

To view the entire topic, please or purchase a subscription.

Davis’s Laboratory and Diagnostic Tests Online, powered by Unbound Medicine, provides nurses and students access to 400+ test monographs containing reference ranges, indications, patient preparation and result interpretation. Explore these free sample topics:


-- The first section of this topic is shown below --



Common Use:
To assess electrolyte balance related to magnesium levels to assist in diagnosis, monitoring diseases, and therapeutic interventions such as hemodialysis.

Serum collected in a gold-, red-, or red/gray-top tube.

Normal Findings:
(Method: Spectrophotometry)

AgeConventional UnitsSI Units (Conventional Units × 0.4114)
Newborn1.7–2.5 mg/dL0.7–1 mmol/L
Child1.7–2.3 mg/dL0.7–0.95 mmol/L
Adult1.6–2.2 mg/dL0.66–0.91 mmol/L

-- To view the remaining sections of this topic, please or purchase a subscription --