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Thyroxine Binding Globulin (TBG) from Marek Health

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.

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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 thyroxine-binding globulin, a thyroid hormone transport protein. Order online with healthcare-provider approval, then visit Quest for blood collection and receive results by email.

Current price
$50 $60 with fees
Sample
Blood
Turnaround
14 days
Access
Direct Lab, Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 7, 2026

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

Best for

Thyroid

Standout strength

Includes the named thyroxine-binding globulin measurement.

Important watch-out

A complete thyroid hormone panel is not confirmed as included.

Thyroxine Binding Globulin (TBG) from Marek Health
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 thyroxine-binding globulin, a thyroid hormone transport protein. Order online with healthcare-provider approval, then visit Quest for blood collection and receive results by email.

Current price
$50 $60 with fees
Sample
Blood
Turnaround
14 days
Access
Direct Lab, Lab Visit, Order Online
Evidence & Key Facts
Source collectedLast source check September 7, 2026

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

Best for

Thyroid

Standout strength

Includes the named thyroxine-binding globulin measurement.

Important watch-out

A complete thyroid hormone panel is not confirmed as included.

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 Marek Health profile

Scope, both directions

Inside the Panel. Beyond the Name.

Named measurements

  • Thyroxine-Binding Globulin (TBG)

Measured categories and focus areas

  • Thyroid

Important limits and omissions

  • The performing laboratory, analytical method and performance characteristics are not confirmed.

The full breakdown

Eight Dimensions.
One Named Result.

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

Seller is Marek Diagnostics; the ordering clinician is Marek-arranged (provider reviews and approves test requests; no buyer clinician visit required) where stated. Collection route is the Quest Diagnostics laboratory system. A Quest draw location or the Marek relationship does not prove the exact performing facility, the assay method, or offer-specific analytical performance, which remain unpublished. Limitation: Seller is Marek Diagnostics; the ordering clinician is Marek-arranged (provider reviews and approves test requests; no buyer clinician visit required) where stated. Collection route is the Quest Diagnostics laboratory system. A Quest draw location or the Marek relationship does not prove the exact performing facility, the assay method, or offer-specific analytical performance, which remain unpublished.

Exact named measurement scope per the product page title and description. Limitation: No additional limitation was recorded in the authority row.

Named analytes per the exact offer; panel boundaries per the product page. Limitation: No additional limitation was recorded in the authority row.

Result delivery format partially documented. Limitation: No additional limitation was recorded in the authority row.

Exact price, purchase route, and ordering model on the product page; performing lab assignment unpublished. Limitation: No additional limitation was recorded in the authority row.

Online ordering with provider-approved test requests; Quest collection; state restrictions apply. Limitation: No additional limitation was recorded in the authority row.

Exact-offer price on the product page; refund and draw-fee terms per shared policies. Limitation: No additional limitation was recorded in the authority row.

Shared Marek privacy policy governs order data; specimen and result retention unresolved. Limitation: No additional limitation was recorded in the authority row.

What it asks of you

Sample and fulfillment journey

Order

Confirmed

Order online. A healthcare provider approves the request without a separate office visit.

Panel-specific source · Source dated September 7, 2026

Collect

Confirmed

Have blood collected at Quest.

Panel-specific source · Source dated September 7, 2026

Report

Confirmed

Results are emailed. Timing estimates differ between two weeks and 14 business days; confirm the expected turnaround.

Panel-specific source · Source dated September 7, 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 7, 2026.View source
Source 2Recorded for this record. Last source check September 7, 2026.View source
Source 3Recorded for this record. Last source check September 7, 2026.View source
Source 4Recorded for this record. Last source check September 7, 2026.View source

True total cost

The Price. Plus the Details.

Pricing for Thyroxine Binding Globulin (TBG)
ItemCurrent disclosed priceNote
Panel$50Verify the checkout total, shipping, and collection fees before ordering.
Venipuncture fee+ $10Per order, added at checkout. Checked October 1, 2026. Source
Total at checkout$60Listed price plus the required fees above, before tax and any optional services.
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

  • Includes the named thyroxine-binding globulin measurement.
  • Online requests include healthcare-provider approval without a separate office visit; results are emailed.

Watch-outs

  • A complete thyroid hormone panel is not confirmed as included.
  • State restrictions apply. Confirm eligibility before ordering.
  • Timing estimates differ between two weeks and 14 business days. Confirm the expected turnaround.
  • The performing laboratory, analytical validation and performance characteristics are not confirmed. A Quest collection location does not establish the performing laboratory.
  • Marek adds a $10 venipuncture fee to orders of $199 or less and waives it on orders over $199. No additional payment is required at the lab. Lab sales are final and non-refundable.

Take it with you

The Test Truth Card

The key facts from this review in one compact card.

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Price
$43
Turnaround
Not confirmed
See Labbrary reviewView Exact Panel on Provider Site
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Verification History

September 7, 2026Recorded source date.Source collected

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