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Magnesium, RBC from DirectLabs

Labbrary Test GradeStrong
Your Fit Score
Not calculated

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Labbrary's review, Fit Score, and basic comparison are free. The provider's panel, shipping, collection, clinician review, and other services are separate. About 2 minutes. No account required.

This blood test measures magnesium in red blood cells. DirectLabs notes magnesium's roles in bones, muscles, heart health, energy production, and nerve function.

Current price
$48
Sample
Blood
Turnaround
5 days
Access
Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 1, 2026

Evidence basis. This named result reflects the sources and verification evidence listed on this page as of the date shown.

Best for

Blood Count, Micronutrients

Standout strength

The official product page lists 1 named measurements, including Magnesium, RBC.

Important watch-out

The current official source set does not fully resolve measurement quality; Labbrary keeps that part of the review neutral.

Magnesium, RBC from DirectLabs
Labbrary Test GradeStrong
Your Fit Score
Not calculated

Answer five questions to see how this panel matches your goals, budget, collection preferences, access, and support needs.

Calculate my fit

Labbrary's review, Fit Score, and basic comparison are free. The provider's panel, shipping, collection, clinician review, and other services are separate. About 2 minutes. No account required.

This blood test measures magnesium in red blood cells. DirectLabs notes magnesium's roles in bones, muscles, heart health, energy production, and nerve function.

Current price
$48
Sample
Blood
Turnaround
5 days
Access
Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 1, 2026

Evidence basis. This named result reflects the sources and verification evidence listed on this page as of the date shown.

Best for

Blood Count, Micronutrients

Standout strength

The official product page lists 1 named measurements, including Magnesium, RBC.

Important watch-out

The current official source set does not fully resolve measurement quality; Labbrary keeps that part of the review neutral.

Labbrary+

The Test Grade. The Reason Behind It.

Strong overall documentation and usefulness, with limitations worth comparing before purchase.

A lower grade does not mean a panel is a bad personal fit. Your Fit Score can be higher when its purpose, price, sample, access, or support matches what you need.

Explore the Full Methodology
Labbrary Test GradeStrong

Next step

Check the panel or research the provider

Prices, availability, and ordering requirements can change. Confirm the current details before purchasing.

View Exact Panel on Provider SiteView DirectLabs profile

Scope, both directions

Inside the Panel. Beyond the Name.

Named measurements

  • Magnesium, RBC

Measured categories and focus areas

  • General Health
  • Blood Count
  • Micronutrients

Important limits and omissions

  • Exact order or draw fees and order-specific refund terms remain unconfirmed.
  • Exact analytical method, performing laboratory and offer-specific validation remain unconfirmed.
  • Exact specimen retention and sharing terms remain unconfirmed under the provider privacy policy.

No broader panel in the Labbrary catalog lists every biomarker on this one for a lower listed price.

Counted among one-time lab-draw listings with a published price, matched by published biomarker names. That doesn’t mean the tests are equivalent. Updated October 2, 2026.

The full breakdown

Eight Dimensions.
One Named Result.

Open any row for the reasoning and evidence behind the named result.

Exact offer names the performing laboratory (Quest Diagnostics) and specimen (Blood); the offer title names the measured target. Limitation: No additional limitation was recorded in the authority row.

The page description matches the titled target (Magnesium, RBC). Limitation: No additional limitation was recorded in the authority row.

Page Includes/Tests Included list enumerates 1 named measurements matching the offer title. Limitation: No additional limitation was recorded in the authority row.

FAQ: all test results include the normal reference ranges with abnormalities indicated; abnormal results should be discussed with a healthcare provider. Limitation: No additional limitation was recorded in the authority row.

Page publishes lab, specimen, fasting requirement, turnaround estimate, and limitations; turnaround times are stated as estimates, not guaranteed. Limitation: No additional limitation was recorded in the authority row.

The exact offer page is live and independently orderable online. Blood is drawn at a patient service center by a certified phlebotomist (FAQ procedure). FAQ: requisitions cannot be used at lab locations in NJ, NY and RI. Limitation: No additional limitation was recorded in the authority row.

Stated turnaround: 'Results: Send out test - set up on Mon and Thurs only, average processing time results 5 days after set up' (estimate, not guaranteed). Page states coupon codes not valid for this testing. Limitation: No additional limitation was recorded in the authority row.

FAQ: DirectLabs respects privacy and maintains confidentiality; the buyer is the only one who receives results unless a signed HIPAA release specifies otherwise; results are not emailed. Limitation: No additional limitation was recorded in the authority row.

What it asks of you

Sample and fulfillment journey

Order

Confirmed

Order this exact offer online. The provider arranges the laboratory order when one is required, so the buyer does not need a separate physician visit before purchase.

Panel-specific source · Source dated September 13, 2026

Collect

Confirmed

Attend a participating laboratory for the documented collection route.

Panel-specific source · Source dated September 13, 2026

Lab

Partially confirmed

The exact offer names DirectLabs participating laboratory network as the laboratory system, while the exact facility, assay method, and offer-specific performance remain unpublished.

Panel-specific source · Source dated September 13, 2026

Report

Confirmed

Results are delivered electronically by email after laboratory processing.

Panel-specific source · Source dated September 13, 2026

Under the hood

Follow the Evidence.

Every published claim should trace to a dated source. Missing evidence remains visible instead of being filled with assumptions.

Source 1Recorded for this record. Last source check September 1, 2026.View source
Source 2Recorded for this record. Last source check September 1, 2026.View source

True total cost

The Price. Plus the Details.

Pricing for Magnesium, RBC
ItemCurrent disclosed priceNote
Panel$48Verify the checkout total, shipping, and collection fees before ordering.
Checkout feesNot confirmedLabbrary hasn't recorded this seller's order, draw or physician fees yet. Check the total at checkout.
HSA/FSA paymentNot confirmedHSA/FSA payment eligibility has not been confirmed from provider documentation.
Optional servicesNot confirmedClinician review, subscriptions, and retesting discounts are listed only when documented.

Price status. This record shows disclosed pricing. Checkout costs can change and should be verified before purchase.

Your data

Your Data. Your Questions.

Privacy details are scored only when source documentation is available. Unconfirmed retention, deletion, research use, or marketing practices remain unconfirmed.

Reading the labels

What Has Been Checked?

Source collected

Evidence labels stay separate from the Test Grade. They show how much source support exists for the evaluation.

The balance

The Strengths. The Tradeoffs.

Strengths

  • The official product page lists 1 named measurements, including Magnesium, RBC.

Watch-outs

  • The current official source set does not fully resolve measurement quality; Labbrary keeps that part of the review neutral.

Take it with you

The Test Truth Card

The key facts from this review in one compact card.

Same biomarkers, other sellers

Other Ways to Buy This Test.

6 other listings in the Labbrary catalog publish this exact biomarker list, with a lab draw. The median listed price across all 7 is $48. Showing the four lowest listed prices.

Magnesium, RBC Blood Test

Mito Health

Useful

Measures magnesium inside red blood cells for one laboratory view of magnesium status and a clinician-guided trend question.

Price
$7.62
Turnaround
4 days
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+

Micronutrient, Magnesium, RBC

Private MD Labs

Strong

A Quest blood test measuring red blood cell magnesium for mineral and micronutrient assessment.

Price
$58
Turnaround
7 days
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+

Listed prices from the Labbrary catalog. Some sellers add fees at checkout, so compare the total before you pay. Updated October 2, 2026.

Keep deciding

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DirectLabs

Useful

This blood test measures folate in red blood cells. DirectLabs describes the test as an aid in evaluating anemia and central nervous system disorders.

Price
$69
Turnaround
5 days
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Anemia Profile (Advanced)

Private MD Labs

Useful

Provides a broad laboratory workup for blood and nutrient patterns that can contribute to anemia. Order online, visit a participating laboratory for blood collection, and view results in your account.

Price
$103
Turnaround
3 days
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Verification History

September 1, 2026Recorded source date.Source collected

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