Thyroid Test Analyzer: Are Your T3, T4, or TSH Levels Normal?

Key Takeaways

Enter the name of the thyroid test and your lab value to get an analysis.

The tool tells you if your results are low, optimal, or high.

This thyroid test tool will help you decode your TSH, T3, T4, and other thyroid function test results. Enter your lab values to get clear insights into whether your levels are high, low, or optimal.

Thyroid Test Analyzer

Wondering what your test results mean? Use this tool to better understand your thyroid levels and identify appropriate next steps.

Resources to Help You Manage Your Thyroid Health

Thyroid disease is common but often misunderstood or overlooked. If your thyroid test results are outside the optimal range—or if you’ve been diagnosed with hyperthyroidism, hypothyroidism, Graves’ disease, Hashimoto’s thyroiditis, or another thyroid-related condition—Verywell provides free resources to help you understand and manage your condition. Our goal is to ensure you have productive and empowering discussions with your healthcare providers.

Explore the following articles, tools, downloads, and communities to learn more:

Learn how to reduce your risk of thyroid disease

What Information Do You Need for This Thyroid Test Analysis?

You’ll need the name of the test and the numerical value as listed on your thyroid test results report to receive an analysis.

Which Thyroid Tests Can Be Analyzed Here?

Our tool can analyze results from these common thyroid tests:12

Thyroid stimulating hormone (TSH)

Free thyroxine (Free T4)

Free triiodothyronine (Free T3)

Radioactive iodine uptake (RAIU) at 6 and 24 hours

TRH stimulation test

Thyroglobulin antibody

Thyroid peroxidase antibodies (TPO)

Thyroid Stimulating Immunoglobulins (TSI)

Thyrotropin receptor antibodies (TRAb)

Reverse T3

It also analyzes results from these less common thyroid tests:34

Total thyroxine (T4)

Total triiodothyronine (T3)

Free thyroxin index (FTI)

T3 resin uptake (T3RU)

Thyroid binding globulin (TBG), measured by electrophoresis and radioimmunoassay

You can analyze one test at a time. Remember, however, that many of these tests are related, and the various thyroid hormones interact with each other and are affected by multiple factors. Your doctor is the best person to analyze your results as a whole—this tool is meant for informational purposes only.

Download this guide for a full overview of each thyroid function test, its optimal range, and what the results mean.

Understanding the Various Thyroid Function Tests

Where Can You Find Your Thyroid Lab Results?

In most cases, your test results will be ready a few days after your bloodwork or imaging test. You can obtain a copy from your doctor’s office, either at a visit or by calling in.

Your doctor will have the results even if the tests were done elsewhere. They might call or schedule an appointment to discuss them with you. Use this tool before or after your discussion to learn more about the tests and results.

Some labs and offices also offer online patient portals where you can view your results without having to call in. Select the name of the test, as indicated on your report, and enter it into the analyzer, along with your listed numerical value, to receive an analysis.

Note that different laboratories may have different reference ranges for these tests. The reference ranges used in the analyzer are meant to represent typical ranges. If the ranges differ, you should refer to the specific ones provided by the laboratory in which the test was performed.

What Insights Does the Thyroid Analyzer Provide?

Once you enter your information, the analyzer will indicate if your result is low, optimal, or high and explain what that means. You’ll also learn about the test’s purpose and what it measures.

Patients with thyroid cancer, pregnancy or pituitary disorders must seek a specialist’s care.

How Do We Analyze Your Thyroid Test Results?

Your results analysis was completed by a board-certified physician. Optimal range values and interpretations are in line with leading thyroid authorities (although they sometimes slightly vary across laboratories).

Remember, this analysis is only for informational purposes. Use it as a starting point or to better understand discussions with your doctor. It is not a replacement for professional medical advice.

Thyroid conditions and hormones are complicated and test results may be affected by various factors. Your doctor is best equipped to view your medical history and the relationships between your different thyroid hormones. They can provide the most accurate interpretation and next steps.

Is Your Information Safe and Private?

We take online privacy very seriously, especially when it comes to individual and personalized health information. We do not track which lab tests you analyze and we do not store any lab values you enter. You are the only one who can see your analysis. Also, you will not be able to return to your results, so if you would like to save them it is best to print them.

Can the Tool Provide a Thyroid Diagnosis?

This tool does not provide medical advice or diagnosis. It is intended for informational purposes only and is not a substitute for professional medical consultations, diagnosis, or treatment.

What Should You Do With This Analysis?

You should use the analysis to empower yourself and learn more about your results, but not to diagnose yourself with a thyroid-related condition, such as hyperthyroidism, hypothyroidism, Graves’ disease, or Hashimoto’s thyroiditis. Proper diagnosis and treatment require a holistic look at your previous medical history, symptoms, lifestyle, and more. Your doctor is the best person to do this.

You can use this information to inspire questions or use it as a starting point for a conversation with your doctor at your next appointment. Asking the right questions can help you know what to expect.

Also, consider bringing along a doctor discussion guide for even more guidance—it lists common vocabulary terms your doctor may use and important questions about symptoms, causes, diagnosis, treatment, and living well with thyroid disease.