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Vitamin B12 from Private MD Labs

Labbrary Test GradeUseful
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A Quest blood test measuring vitamin B12, also known as cobalamin.

Current price
$39
Sample
Blood
Turnaround
1 to 3 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

Micronutrients

Standout strength

Documents vitamin B12, also known as cobalamin.

Important watch-out

Product-specific validation, precision, interference, and quality-control evidence are not fully established.

Vitamin B12 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.

A Quest blood test measuring vitamin B12, also known as cobalamin.

Current price
$39
Sample
Blood
Turnaround
1 to 3 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

Micronutrients

Standout strength

Documents vitamin B12, also known as cobalamin.

Important watch-out

Product-specific validation, precision, interference, and quality-control evidence are not fully established.

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

  • Vitamin B12

Measured categories and focus areas

  • Nutrients
  • 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.

Pre-Buy Audit · Labbrary+

1broader panel with a lower listed price lists every biomarker on this one.

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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.

Private MD Labs publishes a price of $49.00 USD for the Vitamin B12. The service is self-pay; HSA and FSA are accepted but health insurance is not. Orders can be cancelled before samples are collected.

The product page states: This test measures your Vitamin B12 levels to assess your nutritional status and identify potential deficiencies. B12 is essential for energy production, red blood cell formation, and nervous system function, which is why low levels can cause fatigue, weakness, and cognitive issues. This test is par

The product page describes the intended use: This test is ideal if you're experiencing persistent fatigue, weakness, or low energy that doesn't improve with rest. It helps identify vitamin B12 deficiencies that can affect your energy levels, mood, cognitive function, and overall well-being. Many people use this test when they suspect nutrition

Private MD Labs provides results through an online patient portal with normal ranges explained in plain language, and US-licensed doctors are available for guidance. A panel-specific sample report was not published on the product page.

Private MD Labs identifies Quest Diagnostics as the performing laboratory for this test. The specific analytical method was not published on the product page. Quest Diagnostics operates CLIA-certified laboratories.

Ordering is online with a doctor's lab order created remotely; no doctor visit is needed. Samples are collected at one of about 4,000 Quest Diagnostics or LabCorp locations. Results are typically available within about 3 days via the patient portal, email, and SMS.

Private MD Labs states that it does not sell or share customer data. Results are delivered through a secure patient portal. The full privacy policy is published on the provider website; product-specific data retention details were not confirmed.

Private MD Labs publishes the test price, what is measured, and that Quest Diagnostics performs the testing. The company is LegitScript certified. Specific assay methods and performance characteristics were not published on the product page.

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 Vitamin B12
ItemCurrent disclosed priceNote
Panel$39Verify 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

  • Documents vitamin B12, also known as cobalamin.
  • Complete results are listed within 3 business days. No fasting is needed.
  • The exact offer page and purchase state document a current price of $39 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

  • Product-specific validation, precision, interference, and quality-control evidence are not fully established.
  • Abnormal results require clinical interpretation and do not establish a diagnosis from this panel alone.
  • 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.

7 other listings in the Labbrary catalog publish this exact biomarker list, with a lab draw. The median listed price across all 8 is $39. Showing the four lowest listed prices.

Vitamin B12 Test

Health Testing Centers

Limited

Uses a blood sample to assess the published micronutrients scope, with exact measurements and ordering details listed separately.

Price
$35
Turnaround
Not confirmed
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.

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Price
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Turnaround
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Verification History

September 13, 2026Recorded source date.Source collected

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