Thyroglobulin Antibodies (TGAB) Test

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At home thyroglobulin antibodies (TGAB) test. Part of our thyroid antibody test will provide a complete picture of how your thyroid is performing, with online results in 2 to 5 days. Biomarkers covered:

What does it test for?

  • Thyroglobulin Antibodies (TGAB)
  • Thyroid Stimulating Hormone (TSH)
  • Free Thyroxine (FT4)
  • Free Triiodothyronine (FT3)
  • Thyroid Peroxidase Antibodies (TPO/TPEX)
  • Thyroxine (T4)

Collection method


20% off everything.
Use code HOLIDAY20 at cart.

FSA & HSA cards accepted.

Purchase options
$119

20% off everything. Use code HOLIDAY20 at cart.

FSA & HSA cards accepted.

Our thyroid antibody test will determine how your thyroid is performing by looking at thyroid stimulating hormone (TSH), free thyroxine (T4), free triiodothyronine (T3), TGAB and TPEX. The presence of TGAB or TPEX antibodies can indicate thyroid damage which can include autoimmune disorders.

Hypothyroidism (Underactive Thyroid) occurs when the thyroid gland is not producing a sufficient level of thyroxine (T4) and triiodothyronine (T3).

  • Weight gain
  • Fatigue or feeling tired all the time
  • Slow pulse or heart rate
  • Hair loss or thinning
  • Poor tolerance of the cold
  • Depression
  • Dry, coarse or thickened skin
  • Constipation
  • Hand tingling or pain (carpal tunnel syndrome)
  • Irregular period or low sex drive
  • Muscle cramps
  • Impaired memory

Hyperthyroidism (Overactive Thyroid) occurs when the thyroid gland produces an excessive level of thyroxine (T4) and triiodothyronine (T3).

  • Weight loss
  • Fatigue or feeling tired all the time
  • Increase or rapid heart rate
  • Tremors (usually in the hands)
  • Heat intolerance or excessive sweating
  • Difficulty sleeping
  • Excessive sweating or fever
  • Frequent bowel movements or diarrhea
  • Anxiety
  • Irregular period
  • Low sex drive
  • Enlarged thyroid gland (goiter)
  • Eye condition related to hyperthyroidism
  • Thyroid Stimulating Hormone (TSH)

    Thyroid stimulating hormone (TSH), also known as thyrotropin, is a hormone produced by the pituitary gland of the brain. The release of TSH stimulates the thyroid gland to produce thyroxine (T4) and triiodothyronine (T3). These hormones regulate the body’s metabolism.

  • Free Thyroxine (FT4)

    Free thyroxine (FT4) is the biologically active form of thyroxine, a hormone produced in the thyroid gland to regulate your metabolism. FT4 is not bound to proteins and is available for use by the tissues of the body. Raised FT4 levels can indicate an overactive thyroid (hyperthyroidism), low FT4 levels can indicate an under active thyroid (hypothyroidism).

  • Free Triiodothyronine (FT3)

    Free triiodothyronine (FT3) is one of two major hormones produced by the thyroid gland. FT3 is more biologically active than thyroxine (T4) and is required to regulate metabolism. FT3 is produced directly by the thyroid gland, and through the conversion of T4 to T3 in other cells of the body.

  • Thyroglobulin Antibodies (TGAB)

    TGAB is an antibody which can indicate thyroid damage caused by an autoimmune disorder.

  • Thyroid Peroxidase Antibodies (TPO/TPEX)

    TPEX is an antibody which can indicate thyroid damage caused by an autoimmune disorder.

  • Thyroxine (T4)

    Thyroxine (T4) is one of two major hormones produced by the thyroid gland. It is required to regulate metabolism. T4 is found in two different forms, bound to proteins, or free (unbound) in the bloodstream. Protein bound T4 cannot enter the cells of the body for use in metabolism. Free thyroxine (FT4) is biologically active and readily available for use by the body.



How to collect your sample

Watch our instructional video to see how easy it is to collect your sample.


How it works

Collect Sample

Collect Your Sample

Activate your test and collect your sample in the morning. Return your sample on the same day, using the prepaid shipping label provided.

Review Results

Review Accurate Results

Once your sample arrives in the laboratory, confidential results will be available from your secure online account within 2 to 5 days.

Medical Staff

Get Medical Support

Our dedicated team of physicians and nurses are available 24/7 and will call you to explain your results.


Still have questions?

Here are some questions we usually get about LetsGetChecked. If you would like yours answered, please contact us.

The home thyroid antibody test is for anyone who has symptoms of hyperthyroidism, hypothyroidism, has a family history of thyroid disease, has an autoimmune disorder or takes performance enhancing substances.

Activating the test connects you to the unique alphanumeric barcode within your LetsGetChecked test kit. The laboratory cannot process your sample if the test kit is not activated and linked to you.

LetsGetChecked has a team of physicians who will review your order and results. Our nursing team is on standby throughout the testing process and, if you test positive, you will receive a call to discuss your results and treatment options.

Please ensure that the sample is collected before 9am in a fasted state and returned immediately using the carrier method provided within the test kit. Each test includes a prepaid shipping envelope to return your samples to the laboratory.

Please do not collect or return samples on a Friday, Saturday or Sunday.

Keeping your data secure is important to us. All data is completely anonymized to ensure that your privacy is maintained throughout the process. We will not share your information with any third party.

All samples are disposed of following analysis.

Your samples are processed in the same labs used by primary care providers, hospitals and government schemes.

LetsGetChecked laboratories are CLIA approved and CAP-accredited, which are the highest levels of accreditation.

Tests kits are manufactured within our ISO 13485 accredited facility, the highest level of accreditation for medical devices.

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