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Magnesium, RBC from Private MD Labs

Labbrary Test GradeUseful
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.

Measures magnesium inside red blood cells to provide a view of the body's magnesium stores. Order online, visit a participating laboratory for the blood draw, and receive a complete report with explanatory notes in your account.

Current price
$77
Sample
Blood
Turnaround
4 days
Access
Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 13, 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

Measures the single named marker magnesium in red blood cells rather than only magnesium circulating in serum.

Important watch-out

Laboratory testing is unavailable in Hawaii, New Jersey, New York, and Rhode Island. Product and collection-site availability can be narrower.

Magnesium, RBC from Private MD Labs
Labbrary Test GradeUseful
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.

Measures magnesium inside red blood cells to provide a view of the body's magnesium stores. Order online, visit a participating laboratory for the blood draw, and receive a complete report with explanatory notes in your account.

Current price
$77
Sample
Blood
Turnaround
4 days
Access
Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 13, 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

Measures the single named marker magnesium in red blood cells rather than only magnesium circulating in serum.

Important watch-out

Laboratory testing is unavailable in Hawaii, New Jersey, New York, and Rhode Island. Product and collection-site availability can be narrower.

Labbrary+

The Test Grade. The Reason Behind It.

Potentially useful for the right buyer, with meaningful evidence, coverage, transparency, access, cost, terms, or privacy tradeoffs to review.

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 GradeUseful

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 Private MD Labs 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 offer page names no performing laboratory and no assay method; Quest Diagnostics appears only as brand metadata, not as a named testing route for this exact offer.
  • Page hero shows a "Test Today for $1, Pay Balance After Results" promotion; rendered hero after-results amount differs from the authoritative Offer JSON-LD price; price taken from exact-product JSON-LD.
  • Provider-wide testing limits: tests are not available in NY, NJ, RI per provider policy; exact per-offer state list is not published.
  • Product-specific HSA and FSA eligibility or reimbursement is not confirmed; the provider documents payment-card acceptance only.
  • The provider privacy notice does not publish a fixed data-retention period.
  • Refunds are limited to the period before specimen submission, with no refund after 21 days. The money-back guarantee is conditional.
  • The exact offer does not publish a complete assay-method and analytical-performance description.

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.

The offer names the measured marker, Magnesium RBC, in blood. The performing laboratory and analytical method are not stated.

Intended for people with persistent muscle cramps, unexplained fatigue, trouble sleeping, or irritability who want to check for magnesium deficiency.

A single-marker blood test measuring magnesium stored inside red blood cells, which reflects body magnesium stores more accurately than standard serum magnesium. The page lists Magnesium, RBC as the measured marker.

Results are reported with reference ranges and flag values outside the expected range, so a reader can see which markers are high or low. The page does not publish interpretive guidance for this panel, so a clinician or other qualified professional should review results in context before acting on them.

The offer page names the provider, states the current self-pay price, describes what the panel measures, and publishes the provider ordering, collection, and turnaround policies. The exact performing laboratory and analytical method for this panel are not stated on the page.

This is a blood test. The page instructs refraining from vitamins, minerals, or herbal supplements for at least one week before collection, and to consult the prescribing physician before stopping them. No fasting is stated. The page states results take about four business days. Orders are placed online and specimens are collected at one of the provider roughly 4,000 Quest or Labcorp patient locations; direct-access testing is not offered in HI, NJ, NY, or RI.

The current offer price is $77 USD, confirmed on the exact offer page. Payment is self-pay by card or HSA/FSA funds; health insurance is not accepted. Orders can be cancelled before the sample is collected.

The provider publishes a privacy policy describing how personal and health information is collected, used, and protected. Results are delivered through the provider secure online account, and the page does not state additional data-sharing terms specific to this panel.

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 13, 2026.View source
Source 2Recorded for this record. Last source check September 13, 2026.View source
Source 3Recorded for this record. Last source check September 13, 2026.View source
Source 4Recorded for this record. Last source check September 13, 2026.View source

True total cost

The Price. Plus the Details.

Pricing for Magnesium, RBC
ItemCurrent disclosed priceNote
Panel$77Verify 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

  • Measures the single named marker magnesium in red blood cells rather than only magnesium circulating in serum.
  • No fasting is required for the laboratory draw.
  • The exact product is active, visible, and available to order online for collection at a participating laboratory.
  • The exact offer page and purchase state document a current price of $77 USD.
  • Private MD Labs arranges the physician lab order, so buyers do not need to supply their own clinician.
  • Results are delivered digitally with report context documented for this exact offer.
  • The privacy notice allows account and data deletion requests, subject to regulatory, compliance, legal, and business retention requirements.

Watch-outs

  • Laboratory testing is unavailable in Hawaii, New Jersey, New York, and Rhode Island. Product and collection-site availability can be narrower.
  • Preparation instructions say to avoid vitamins, minerals, and herbal supplements for at least one week before collection. Consult the prescribing physician before stopping any prescribed supplement or medication.
  • The page gives approximately 4 business days for results and separately lists first results starting the next day with complete results within 7 business days. Confirm current timing if the result date matters.
  • A significant result outside the reference range may require further evaluation by a physician.
  • HSA and FSA card acceptance is documented, but eligibility or reimbursement for this exact offer is not confirmed.
  • Refunds are permitted only before specimen submission and are unavailable after 21 days from payment. The 90-day money-back guarantee has first-customer, result, and test-category conditions.
  • The privacy notice permits defined laboratory and service-provider disclosures, deidentified research use with an opt-out, and third-party advertising unless the user opts out. No fixed retention period is published.
  • Private MD Labs does not offer services to residents of New York, New Jersey, or Rhode Island. Exact collection-site availability should be checked before purchase.

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+

Magnesium, RBC

DirectLabs

Strong

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

Price
$48
Turnaround
5 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

Folate, RBC

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
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+
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Verification History

September 13, 2026Recorded source date.Source collected

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