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Testosterone, Free, Mass Spectrometry/Equilibrium Dialysis from Private MD Labs

Labbrary Test GradeUseful
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A Quest blood test deriving free testosterone from equilibrium dialysis and total testosterone measured by HPLC with tandem mass spectrometry.

Current price
$578
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

Sex Hormones, Testosterone

Standout strength

Documents free testosterone derived from equilibrium dialysis and total testosterone measured by HPLC with tandem mass spectrometry.

Important watch-out

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

Testosterone, Free, Mass Spectrometry/Equilibrium Dialysis 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 deriving free testosterone from equilibrium dialysis and total testosterone measured by HPLC with tandem mass spectrometry.

Current price
$578
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

Sex Hormones, Testosterone

Standout strength

Documents free testosterone derived from equilibrium dialysis and total testosterone measured by HPLC with tandem mass spectrometry.

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

  • Testosterone, Free
  • Testosterone, Total

Measured categories and focus areas

  • Hormones
  • Sex Hormones
  • Testosterone

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+

72broader panels with a lower listed price list 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.

The page offers a blood test measuring two analytes: free testosterone by equilibrium dialysis, described as the most accurate technique available, and total testosterone by mass spectrometry. No fasting is required; a morning draw is recommended and testosterone cream should be kept off the inner elbow for 24 hours. Limitation: the exact performing laboratory is chosen during ordering and is not bound to this offer.

The page targets men and women with low energy, reduced muscle, or low libido who want the active testosterone fraction, especially when standard testosterone tests were inconclusive. Limitation: diagnostic ability is not established.

Two analytes are named: free testosterone and total testosterone. Limitation: related hormones such as LH, FSH, or estradiol are not included in this offer.

Doctor notes explain the free testosterone result in plain language with recommendations, plus the standard lab report and trend tracking. Limitation: measurement uncertainty is not assessed.

The product page publishes this as a national $578 offer: online ordering, the doctor's lab order created remotely with all lab fees included, and collection at the lab company selected during ordering (Quest Diagnostics or Labcorp). Limitation: the exact performing laboratory is not named.

Ordering is fully online: after checkout a doctor's lab order is created remotely and emailed, and you visit one of about 4,000 lab locations for the blood draw. Most locations recommend booking an appointment rather than walking in. Most results are ready within 1 to 3 business days; more advanced tests may take longer. Limitation: direct-access testing is not available in HI, NJ, NY, or RI.

The live product page confirms the exact offer price of $578. The service is self-pay only; HSA and FSA are accepted while health insurance, including Medicare, is not. The page advertises no-questions-asked refunds, cancellation before sample collection, and a first-time money-back guarantee when all results are normal. Limitation: refund terms beyond these statements are not fully detailed on the page.

Private MD Labs states HIPAA compliance, that customer data is not sold or shared, and the site shows LegitScript certification. Limitation: the page does not publish a fixed data-retention period.

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 Testosterone, Free, Mass Spectrometry/Equilibrium Dialysis
ItemCurrent disclosed priceNote
Panel$578Verify 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 free testosterone derived from equilibrium dialysis and total testosterone measured by HPLC with tandem mass spectrometry.
  • Uses Quest collection with online result access and provider explanations.
  • Complete results are listed within 10 business days. If using testosterone cream, the retained source instructs avoiding application to the antecubital area for at least 24 hours before collection.
  • The exact offer page and purchase state document a current price of $578 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.
  • Conflicting $723 and $1255 source-page signals prevent a confirmed current price.
  • 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.

8 other listings in the Labbrary catalog publish this exact biomarker list, with a lab draw. The median listed price across all 9 is $79. Showing the four lowest listed prices.

Testosterone, Free (Dialysis) and Total, MS Blood Test

Mito Health

Useful

Measures free testosterone by equilibrium dialysis and total testosterone by mass spectrometry for a direct view of the free fraction and total hormone.

Price
$13.63
Turnaround
10 days
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+

Total Testosterone [LC/MS] & Free Testosterone [Equilibrium Dialysis]

Marek Health

Useful

Paired total and free testosterone blood testing using LC/MS and equilibrium dialysis, ordered online for Quest collection.

Price
$60
Turnaround
14 days
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+

Testosterone, Free (Dialysis) and Total, MS

Jason Health

Useful

Measures total testosterone by mass spectrometry and free testosterone by dialysis using a blood sample.

Price
$68
Turnaround
8 days
See Labbrary reviewView Exact Panel on Provider Site
Labbrary+

Testosterone, Free (Dialysis) and Total, MS

DirectLabs

Useful

This blood test measures free and total testosterone for male and female patients, with free testosterone measured by dialysis.

Price
$69
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.

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Verification History

September 13, 2026Recorded source date.Source collected

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