Thyroid Test Options

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Match your thyroid question to the right test

Each of these answers a different thyroid question — hormone output, immune activity, or both.

Want the usual starting look at thyroid hormones? TSH with free T4 and free T3, the three most commonly reported results View TSH, Free T4 & Free T3 $100 $80
Only following TSH and free T4? two results, with free T4 measured by direct dialysis View TSH and Free T4 $90 $72
Interested in thyroid-related immune activity instead? antibodies only — TPO and thyroglobulin, with no hormone measurements View Thyroid Antibodies $132 $106
Prefer hormones and antibodies in one panel? the broadest here — hormones and antibodies together, plus reverse T3, total T3, and TSI View Thyroid Starter $371 $297

Featured tests

HSA/FSA accepted

Thyroid Profile w/ TSH

Diagnose thyroid problems with precision
Reveal underlying health conditions effortlessly
Clarify the cause of your symptoms

• All lab fees included

-20% $62 about $1 per marker

List price ~~$78~~

HSA/FSA accepted

Thyroid TSH w/ Free T4 & Free T3

Pinpoint the cause of your fatigue
Reveal hidden thyroid issues effortlessly
Clarify why you're struggling with weight

• All lab fees included

-20% $80 about $1 per marker

List price ~~$100~~

HSA/FSA accepted

Thyroid-Stimulating Hormone (TSH) and Free T4 (FT4)

Diagnose thyroid problems with precision
Pinpoint the cause of chronic fatigue
Expose the reasons behind your weight gain

• All lab fees included

-20% $72 about $5 per marker

List price ~~$90~~

HSA/FSA accepted

Thyroid Peroxidase (TPO) and Thyroglobulin Antibodies (TAA)

Pinpoint the cause of your fatigue
Reveal hidden thyroid issues effortlessly
Clarify the reason behind weight changes

• All lab fees included

-20% $106 about $13 per marker

List price ~~$132~~

HSA/FSA accepted

Thyroid Starter

Diagnose thyroid problems with precision
Pinpoint the cause of chronic fatigue
Expose the reasons behind your weight gain

• All lab fees included

-20% $297 about $4 per marker

List price ~~$371~~

HSA/FSA accepted

Thyroid Panel with Ferritin and Vitamin D

Pinpoint the cause of your fatigue
Reveal hidden thyroid issues effortlessly
Detect vitamin D deficiencies early

• All lab fees included

-20% $142 about $1 per marker

List price ~~$177~~

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A thyroid test measures signals and hormones involved in thyroid function, often beginning with TSH and adding T4 or T3 measurements when a fuller picture is useful. Some options also measure thyroid peroxidase and thyroglobulin antibodies, which help investigate whether immune activity is relevant. Compare whether your question is about TSH with free hormones, total T4 and T3 uptake, or antibodies. Then select a panel whose listed measurements match the results you want to discuss with a health professional, especially if symptoms or ongoing thyroid care are involved.

What TSH, T4, and T3 results describe

TSH is a pituitary signal used alongside thyroid hormone results to assess the thyroid feedback system. Free T4 reflects the unbound portion of thyroxine circulating in blood, while free T3 reflects unbound triiodothyronine. The Thyroid TSH w/ Free T4 & Free T3 panel measures all three. The Thyroid Profile w/ TSH measures TSH, total T4, T3 uptake, and a free T4 index. Total T4 includes hormone carried by blood proteins; T3 uptake and the free T4 index help place that total T4 result in relation to binding proteins. A single result does not establish a diagnosis, so symptoms, prior results, and professional review matter.

When thyroid antibodies add a different question

Thyroid peroxidase antibodies and thyroglobulin antibodies measure antibodies directed at thyroid-related proteins. They do not measure thyroid hormone output, and antibody results alone do not diagnose an autoimmune thyroid condition. The Thyroid Peroxidase (TPO) and Thyroglobulin Antibodies (TAA) test measures both antibodies, while the Thyroid Starter combines them with TSH, free T4, free T3, reverse T3, TSI, and total T3. That distinction matters when the goal is to review immune-related findings alongside hormone measurements rather than to obtain antibodies alone. A clinician can interpret antibody findings alongside TSH and free hormone results, symptoms, and medical history.

Adding ferritin and vitamin D to thyroid measurements

The Thyroid Panel with Ferritin and Vitamin D measures TSH, free T4, free T3, TPO antibodies, thyroglobulin antibodies, ferritin, and vitamin D forms including 25-OH total. Ferritin reflects stored iron and is not a thyroid hormone measurement. Vitamin D testing reports 25-OH vitamin D, including total, D2, and D3 values. These results can help structure a broader conversation when fatigue, hair changes, or other nonspecific concerns overlap with thyroid questions, because such symptoms have several possible causes. They should not be used to assign those symptoms to the thyroid. Review notable findings with a qualified professional.

Thyroid FAQ

A thyroid test commonly measures TSH, T4, T3, or a combination of these markers. TSH is a pituitary signal, while free T4 and free T3 reflect unbound circulating hormone. The Thyroid Profile w/ TSH instead measures TSH, total T4, T3 uptake, and free T4 index, which frames total T4 in relation to binding proteins.

No, TSH alone is one signal in the thyroid feedback system, whereas a panel includes additional measurements. Thyroid TSH w/ Free T4 & Free T3 combines TSH with two free hormone results. Thyroid-Stimulating Hormone (TSH) and Free T4 (FT4) focuses on TSH and free T4 measured by direct dialysis.

Free T4 and free T3 help relate the pituitary TSH signal to unbound hormone in circulation. A TSH result and a free hormone result do not always tell the same story, which is why they are often considered together. Differences in illness, medications, and laboratory methods can affect interpretation, so a professional should assess unexpected patterns.

Total T4 includes T4 carried by blood proteins as well as unbound T4, while free T4 reports the unbound portion. The Thyroid Profile w/ TSH uses total T4, T3 uptake, and free T4 index. The Thyroid TSH w/ Free T4 & Free T3 directly reports free T4 and free T3 alongside TSH.

TPO and thyroglobulin antibody tests measure antibodies to thyroid peroxidase and thyroglobulin, respectively. Their presence can support an investigation of thyroid-related immune activity, but does not diagnose an autoimmune disease by itself. The Thyroid Peroxidase (TPO) and Thyroglobulin Antibodies (TAA) test measures both, without TSH or thyroid hormone measurements.

Thyroid Starter combines antibody testing with thyroid function measurements. It measures TSH, free T4, free T3, TPO antibodies, thyroglobulin antibodies, reverse T3, TSI, and total T3; the TPO and Thyroglobulin Antibodies test measures the two antibodies only. This makes the Starter more suitable when both hormone and immune-related results are part of the question.

TSI is included in the Thyroid Starter along with TSH, free T4, free T3, total T3, reverse T3, and two thyroid antibody measurements. It is a thyroid-related immune marker, not a thyroid hormone measurement. TSI should be interpreted with the hormone results and clinical evaluation rather than used alone to determine a diagnosis or treatment.

The Thyroid Panel with Ferritin and Vitamin D adds ferritin and 25-OH vitamin D results to TSH, free T4, free T3, and thyroid antibodies. Ferritin reflects iron stores, and 25-OH vitamin D reflects vitamin D status. Those results add relevant information when nonspecific concerns overlap, but they do not prove a thyroid cause.

The appropriate repeat test depends on which results are being followed and the plan set by the treating professional. Thyroid-Stimulating Hormone (TSH) and Free T4 (FT4) provides TSH and direct-dialysis free T4, while Thyroid TSH w/ Free T4 & Free T3 also includes free T3. Keeping the same measurements over time helps make result comparisons more meaningful.

Ordering & Results FAQ

You'll receive it via email within 60 seconds of your order unless it requires additional processing (only very complex orders do).

Many general wellness test results are typically available online within 2-3 business days. However, some tests will require additional processing time. You will immediately receive an email & SMS notification when your results are available.

We do not share your results with your physician, insurance company, or any other third party.