Biomarkers · Chemical

Magnesium RBC

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.

Magnesium Blood Test, MedlinePlus, National Library of Medicine

Also listed as: Magnesium, RBC, erythrocyte count, red blood cell count, red blood cells, erythrocytes
Primary unit: mg/dL
LOINC codes: 26746-8
Tests that measure Magnesium RBC: Quest Diagnostics 2, Labcorp 1

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Micronutrient, Magnesium, RBC 10212

Population	Interval
≥18 years	4.0-6.4 mg/dL

Quest Diagnostics test catalog, 10212

Tests

Check the catalog code, specimen, method and preparation for every test that measures Magnesium RBC. Select up to five tests to compare them side by side.

Quest Diagnostics 2 tests

Single-analyte tests

Magnesium, RBC 623
0.5 mL packed RBC cells collected in an EDTA (lavender-top) tube or sodium heparin (royal blue-top) tube · Fasting not stated · Turnaround Set up: Mon, Thurs
Method and collection
Method
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Preparation
Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection
Collection
Packed RBCs: Centrifuge specimen and discard plasma within two hours of collection. Transfer RBCs to a plastic transfer vial. Whole blood: Do not centrifuge whole blood.
Reference notes
4.0-6.4 mg/dL
Quest Diagnostics catalog page
Micronutrient, Magnesium, RBC 10212
Blood · Fasting not stated · Turnaround Set up: Mon, Thurs
Method and collection
Method
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Preparation
Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection.
Collection
Patients should be 18 years of age or greater. Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube.
Quest Diagnostics catalog page

Labcorp 1 test

Single-analyte tests

Magnesium, RBC 080283
Blood · Fasting not stated · Turnaround 2 - 4 days
Method and collection
Method
Atomic absorption spectrometry (AAS); inductively-coupled plasma/mass spectrometry (ICP/MS)
Collection
Centrifuge tube as soon as possible and separate plasma from cells. Discard the plasma. Using the original collection tube, submit only the RBCs to the laboratory.
Reference notes
3.7–7.0 mg/dL
Labcorp catalog page

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Sources

Labcorp test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
2 tests: codes, specimens, methods, preparation and reference intervals.
MedlinePlus, National Library of Medicine
The description at the top of this page.
LOINC 26746-8
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Magnesium RBC
Registered studies that measure Magnesium RBC, on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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