Ordering the Comprehensive Thyroid Assessment Test Kit
Ordering the Comprehensive Thyroid Assessment Test Kit helps you check for thyroid hormone imbalances, which can affect energy, mood, weight, and more. This test measures thyroid-stimulating hormone (TSH), free T3, free T4, reverse T3, and thyroid antibodies, giving a full picture of how your thyroid is working. Interestingly, reverse T3 is included in this panel, which can help spot issues with how your body converts thyroid hormones—something not always checked in standard tests.
Ordering this test gives you:
- Detailed results for TSH, free T3, free T4, reverse T3, and thyroid antibodies
- Helps spot autoimmune thyroid problems like Hashimoto’s or Graves’ disease
- Shows if your body is making and using thyroid hormones correctly
- Can help explain symptoms like fatigue, weight changes, or mood swings
- Includes markers that are often missed in basic thyroid panels
Who Should Consider a Full Thyroid Panel
People who have ongoing tiredness, trouble losing or gaining weight, or changes in mood may benefit from this test. For example, someone who has tried different diets and exercise routines but still feels tired and struggles with weight changes might find answers with a full thyroid panel.
Ordering this test may also be helpful if you:
- Have a family history of thyroid or autoimmune problems
- Notice hair thinning or dry skin that doesn’t improve with regular care
- Experience irregular periods or fertility concerns
- Have high cholesterol that doesn’t respond to diet changes
- Deal with memory issues or brain fog that seem unrelated to stress or sleep
Checking these markers can help you and your doctor find the cause of symptoms like tiredness, mood changes, or weight shifts, and guide the next steps for treatment. Delaying this test could mean missing early signs of thyroid problems, which may make symptoms harder to manage later.
Preparing for a Thyroid Function Panel
Fasting is not required for this test, so you can eat and drink as usual before collecting your sample. Always follow any instructions your doctor or healthcare provider gives you to make sure your sample is collected the right way.
Labs Included When Ordering Your Comprehensive Thyroid Assessment Test Kit
| Test Name | Reference Range | What This Test Shows | Low and High Levels of Comprehensive Thyroid Assessment Test Kit |
|---|---|---|---|
| TSH (Thyroid Stimulating Hormone) | 0.45 – 4.5 | TSH is made by the pituitary gland and tells the thyroid to make hormones. It helps show if your thyroid is working too fast or too slow. |
High levels mean your thyroid may be underactive (hypothyroidism).
Low levels mean your thyroid may be overactive (hyperthyroidism). |
| Free T3 | 2.0 – 4.4 | Free T3 is the active form of thyroid hormone that helps control energy and metabolism. It shows how much usable hormone is in your blood. |
High levels mean your thyroid may be making too much hormone.
Low levels mean your body may not be making or using enough thyroid hormone. |
| Free T4 | 0.8 – 1.8 | Free T4 is the main hormone made by the thyroid. It is changed into T3 in the body and helps control how your body uses energy. |
High levels mean your thyroid may be overactive.
Low levels mean your thyroid may be underactive. |
| Reverse T3 | 8 – 25 | Reverse T3 is an inactive form of T3. It can build up when your body is under stress or not converting T4 to T3 well. |
High levels mean your body may be under stress or not using thyroid hormone well.
Low levels mean your body is likely converting thyroid hormones normally. |
| Thyroglobulin Antibodies (TGA) | 0 – 4 | TGA are antibodies that can attack the thyroid. High levels may show autoimmune thyroid disease, like Hashimoto’s or Graves’. |
High levels mean your immune system may be attacking your thyroid.
Low levels mean there is little or no immune attack on your thyroid. |
| Thyroid Peroxidase Antibodies (TPO) | 0 – 9 | TPO antibodies can show if your immune system is attacking the thyroid. This helps spot autoimmune thyroid problems early. |
High levels mean your immune system may be causing thyroid inflammation.
Low levels mean there is little or no immune attack on your thyroid. |
Reference ranges may change slightly as labs update their standards and methods.
Comprehensive Thyroid Assessment Test Kit FAQ
Is there Comprehensive Thyroid Assessment Test Kit testing near me?
This is a home test kit, and you can collect your sample locally—check the draw location link at the top of the page. If you have symptoms like fatigue or mood changes, having a nearby collection site makes it easier to get tested without delay.
How do I interpret the test results?
While your treating physician should review your results, we also offer a one-on-one test results review with our clinical team to help you understand your results and next steps.
What is the cost of the test?
The price for the Comprehensive Thyroid Assessment Test Kit includes standard shipping to you and back to the lab, but draw fees may apply. Ordering this test can help you find the cause of symptoms like tiredness or weight changes, so you can start feeling better sooner.
How often should I retest?
Most people retest every 6 to 12 months, or as recommended by their doctor, to track changes in thyroid function and adjust treatment if needed. Regular testing helps catch changes early and supports better symptom management.
How accurate is the test?
This test uses chemiluminescent immunoassay and enzyme immunoassay methods, with a specificity of 99% and sensitivity of 98% for thyroid markers. TrueHealthLabs.com partners with CLIA-certified and CAP-certified laboratories to uphold rigorous testing standards for dependable results.
Medical Review Board
Reviewed by Jeff Donohue M.D. from Body Logic and Brady Hurst DC, CCCN. Written by True Health Lab’s team of editorial health contributors.
Disclaimer: This information is for educational purposes only and not intended as medical advice. Consult your healthcare provider for personalized guidance.
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