Thyroid issues can sneak up quietly, affecting everything from your mood and energy to your weight and focus. PRYM ThyroCheck offers a deeper look at your thyroid function and screens for autoimmune thyroid disease, so you can get clarity on symptoms that don’t seem to have a clear cause. It's a helpful tool for anyone with fatigue, hormonal shifts, brain fog, or a family history of thyroid conditions.

Tests Performed
  • Thyroid: TSH, Free T3, Total T4, T3 Uptake, TPO
    Antibodies, Free Thyroxine Index
Kit Includes
  • Easy to understand instructions
  • Collection device with tube
  • Heat pack
  • Bandages
  • Alcohol Swab
  • Prepaid return label and box
Collection Method
  • Blood

Test Details

Learn more about each test in this panel.

Thyroid Function

TSH (Thyroid-Stimulating Hormone)
TSH controls how much thyroid hormone your body makes. It’s often the first marker checked when evaluating thyroid health.

Free T3 (Triiodothyronine)
This is the active thyroid hormone that helps regulate metabolism, energy, and body temperature.

Total T4 (Thyroxine)
Measures the total amount of T4 hormone (both bound and unbound) in your blood to assess overall thyroid output.

T3 Uptake
T3 Uptake helps estimate the number of binding proteins available for thyroid hormones and assists in calculating the Free Thyroxine Index.

Free Thyroxine Index (FTI)
A calculated value that provides insight into active thyroid hormone levels, especially when protein levels fluctuate.

Thyroid Autoimmunity

TPO Antibodies (Thyroid Peroxidase Antibodies)

Elevated TPO antibodies suggest autoimmune thyroid disease, such as Hashimoto’s or Graves’ disease, even if other thyroid markers are normal.

How the device works

Our FDA-cleared device makes collection quick and virtually painless.

Stick it on your arm, press a button, and in about five minutes, you’re done. No needle. No fuss.

Accessing your results

Once your sample reaches our lab, you’ll get your results in 2–3 business days. We’ll email you when they’re ready, and you can view them through your secure online portal.

Your report is easy to read and ready to share with your healthcare provider.

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Whether you’re checking in on your hormones, managing fatigue, or just want a clearer picture of your health, we’ve got you. No surprise bills. No hassle.

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