What If My TSH Is Normal, but I Still Have Thyroid Symptoms? (2022)

Some people treated for hypothyroidismmay still experience symptoms even if blood tests show that their thyroid stimulating hormone (TSH) levels are well within the normal range. The reasons for this are complex, but the bottom line is that having a normal TSH value doesn't necessarily mean that all of your symptoms will go away.

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5 Common Misconceptions About Thyroid Disease

In fact, your TSH blood tests may say that you are clinically euthyroid (normal), but you may still experience many of the same problems you had prior to treatment, including:

  • Chronic fatigue
  • Weight gain despite no change in diet
  • Feeling cold all the time
  • Muscle and joint aches
  • Itchy and dry skin
  • Hair loss
  • Depression
  • Difficulty concentrating
  • Chronic constipation
  • Heavy or irregular periods

What If My TSH Is Normal, but I Still Have Thyroid Symptoms? (1)

A Healthy Thyroid's Not Just About TSH

Evidence suggests that situations like this are not as uncommon as one may think. Even when placed on levothyroxine—the drug considered the gold standard of hypothyroid treatment—many people fail to reap the physical benefits of treatment.

A 2016 study from Rush University reported that people on levothyroxine alone were an average of 10 pounds heavier than people without thyroid disease, despite eating less, and were more likely to be on antidepressants, beta-blockers, and statin drugs.

What this tells us is that having "healthy" blood results doesn't necessarily mean you will feel healthy. This is because the normalization of TSH levels only paints a part of the picture of what "normal" thyroid function is all about.

Mechanisms of Thyroid Function

Many people assume that TSH is a thyroid hormone, but it's actually not. It is a hormone produced by the pituitary gland, the organ that detects whether thyroid hormone levels in the blood are high or low. If the latter, the pituitary gland will secrete TSH to spur the thyroid gland into action.

(Video) SIGNS THAT YOU HAVE A LOW THYROID LEVEL - Hypothyroidism Symptoms

The thyroid gland will produce several different hormones. The role of these hormones is to regulate body metabolism (the conversion of oxygen and calories into energy). The main hormone is thyroxine (T4), which only has a moderate effect on metabolism.

However, when thyroxine loses a molecule of iodine in a process called monodeiodination, it is converted into triiodothyronine (T3), the "active" thyroid hormone able to exert four times the hormonal strength of T4.

Possible Explanations

While the mechanisms of thyroid function may seem clear and simple, they can vary from one person to the next. And, oftentimes, the tests used to monitor thyroid function provide only a glimpse of a person's true clinical picture.

Levothyroxine therapy is typically monitored with TSH and T4 blood tests. The presumption is that if T4 levels are restored to the normal range, T4 will naturally convert to T3 and deliver more of the active hormone the body needs. Experts are finding that is not always the case.

The Rush University study found that people on levothyroxine alone tended to have a lower ratio of T3 to T4 hormones compared to the general population, meaning that T3 may be deficient despite achieving the diagnostic goals for hypothyroidism.

While the reasons for this could be many, including a genetic resistance to levothyroxine or chromosomal defects like deiodinase polymorphism (which impede T3 conversion), the bottom line is that levothyroxine "success" can often be measured in labs but not be felt in real life.

What to Do If Thyroid Symptoms Persist

In the past, people who felt unwell despite normal TSH and T4 levels were faced with a certain skepticism by healthcare providers and others. In some cases, they would be referred for psychological counseling or assumed to be cheating on a diet if their weight continued to increase.

While healthcare providers today better understand the variability of thyroid hormone replacement therapy, you may still need to advocate for yourself if there is any suggestion that your symptoms are "in your head."

Do You Need a New TSH Target?

When assessing your response to treatment, many healthcare providers will aim to get your TSH level to around 1 to 2 mU/L—the lower end of the normal range.

While you may be told that TSH levels of 1 to 2 mU/L are "fine" if you have mild hypothyroidism, it is possible to still have symptoms, especially if your levelstend to fluctuate.

To this end, some endocrinologists have lowered the TSH threshold from the standard normal range of 0.5 to 5 mU/L to a revised normal range of 0.3 to 3.0 mU/L. By tightening your hormonal controls to the lower end of the revised range, you may be less prone to symptoms.

(Video) What To Do When TSH Is Normal But Still Have Hypothyroid Symptoms

Consider Other Levothyroxine Brands

Levothyroxine is the generic name of the drug marketed under many different brand names. The majority of people first starting treatment will be prescribed the Synthroid brand. Other available brands include Levoxyl, Levothroid, and Unithroid.

While the U.S. Food and Drug Administration (FDA) tightly regulates the type, purity, and amount of key active and inactive ingredients in a drug, different manufacturers (particularly generics manufacturers) may use different fillers and binding ingredients, some of which may affect drug absorption or trigger adverse symptoms. Changing brands may potentially alleviate unintended side effects. Talk to your healthcare provider about whether this might be right for you.

Synthroid Can Cause Allergic Reactions and Sensitivity

Avoid Generics or Get a Stable, Multiple-Month Batch

Some HMOs and insurance companies will automatically override your healthcare provider's requested brand and supply you with ageneric levothyroxine made by one of many different manufacturers.

There is nothing inherently wrong with generic drugs. The problem with this practice, however, is that you may be switched from one generic brand to the next every month without even knowing it. And, each time you are, you may receive a product that has a slightly different potency or is closer to the expiration date that you might otherwise prefer.

To ensure medication consistency, ask your healthcare provider to write "no generic substitution" or "DAW" (dispense as written) on the prescription. If your insurer threatens a higher drug copay, ask your healthcare provider to write a motivation outlining why the specific brand is necessary.

If your insurer denies your request, try asking healthcare provider to write a prescription for a six-month drug supply. Once received, check to ensure the drugs are all from the same manufacturer and are within the expiration date for at least the next six months.

Inquire About a T3 Drug

There are many healthcare providers who consider the addition of a T3 hormone, in the form of Cytomel (liothyronine), wholly unnecessary and problematic. They will point to the fact that it is prone to rapid uptake in the intestines and may quickly turn a hypothyroid problem into a hyperthyroid problem. T3 hormones can also interfere with T4 blood test results and complicate the monitoring of your disease. All of these things are true, but to a degree.

If you are able to maintain control of your TSH and T4 but are feeling unwell, the addition of Cytomel may improve your symptoms, according to research from Spain and the National Institute of Diabetes and Digestive and Kidney Diseases.

(Video) TSH Normal, but still having hypothyroid symptoms

The same research suggests that the combination of Cytomel and levothyroxine may improve symptoms without any additional side effects compared to levothyroxine alone.

Benefits of Cytomel in Combination Therapy

Ask About Natural Desiccated Thyroid (NDT)

In recent years, an increasing number of people are embracing a century-old treatment called natural desiccated thyroid (NDT), which is derived from the dried thyroid gland of pigs or cows. NDT delivers T4, T3, and other thyroid hormones in a tablet form and is today used by the likes of Hillary Rodham Clinton and others to manage their hypothyroid symptoms.

While NDT is not officially approved for the treatment of hypothyroidism, it is regulated by the FDA and allowed to be sold by prescription, having been "grandfathered" in as a standard of care since the 1950s.

NDT is marketed under many different brand names, including Armour Thyroid, Nature-Throid, WP Thyroid, and others.

A Word From Verywell

Treatment guidelines issued by the American Association of Clinical Endocrinologists (AACE) and American Thyroid Association (ATA) provide healthcare providers a valuable roadmap for the treatment of hypothyroidism. Despite this, there remains significant contention among clinicians about facets of the guidelines, including how to treat subclinical (non-symptomatic) hypothyroidism and the appropriate use of Cytomel.

To this end, you need to take steps to find an experienced endocrinologist who is able to work with you as a partner in your care. You should be able to freely discuss complementary and alternative options without constraint and work together to weigh the pros and cons of treatment so that you can make a fully informed choice.

If you are uncertain about the care you are receiving, do not hesitate to seek a second opinion or to ask that your medical records be forwarded to another healthcare provider.

Frequently Asked Questions

  • What can mimic hypothyroidism?

    Several conditions can cause symptoms that are similar to those of hypothyroidism. Examples include Addison’s disease, anemia, depression, perimenopause, chronic fatigue syndrome, nutritional deficiencies, sleep apnea, and other thyroid disorders.

    (Video) Why You Still Have Thyroid Symptoms With Normal TSH and T4
  • Can hypothyroidism be missed on a blood test?

    Yes. Research shows that some people with hypothyroidism can have normal, rather than elevated, TSH levels on standard blood work. TSH can also fluctuate at different times of the day or year.

  • Why is my TSH low but my T3 and T4 are normal?

    Low TSH and normal T3 and T4 can indicate subclinical (mild) hyperthyroidism. This has a number of potential causes, including pregnancy, Graves' disease, an enlarged thyroid (goiter) with multiple nodules, thyroiditis, and thyroid adenoma. TSH-suppressive therapy can also be to blame.

Thyroid Disease Healthcare Provider Discussion Guide

Get our printable guide for your next healthcare provider's appointment to help you ask the right questions.

What If My TSH Is Normal, but I Still Have Thyroid Symptoms? (2)

(Video) TSH Results / Levels: How to explain in 80 seconds

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FAQs

Is it possible to have thyroid problems with a normal TSH? ›

Can you have hypothyroidism with normal TSH? Yes, it is possible to have hypothyroidism and normal TSH levels in the blood. Most people with hypothyroidism have high TSH because their thyroid gland is not releasing enough hormones. In response to this, the body produces more TSH in order to get the thyroid to work.

Why Do I Still Have thyroid symptoms When my labs are normal? ›

However, many people still experience thyroid related symptoms even when their labs have “normalized”. This is typically because the root cause of thyroid dysfunction has not been identified. Think about this! 90% of Hypothyroid cases are a result of an autoimmune “self-attack” referred to as Hashimoto's (2).

What can mimic thyroid symptoms? ›

  • Angioedema.
  • Bronchitis.
  • Bulimia Nervosa.
  • Chronic Obstructive Pulmonary Disease.
  • Congestive Heart Failure.
  • Depression.
  • Menopause.
  • Preeclampsia.

Can you have symptoms of Hashimoto's with normal TSH? ›

It's possible to have Hashimoto's disease but not yet have a severe enough case that your thyroid function has been impacted. In these cases, you can have Hashimoto's disease with normal TSH.

Can thyroid symptoms come and go? ›

Graves' disease often causes symptoms of hyperthyroidism. Graves' disease can also affect your eyes and skin. Symptoms can come and go over time.

Why is TSH test not enough? ›

It does not detect any problems you may have converting T4 (the inactive form of thyroid hormone) to T3 (the active form). TSH also cannot detect thyroid hormone resistance, which happens when cells are unable to allow thyroid hormone inside because their receptor sites are malfunctioning.

What can mimic hyperthyroidism? ›

  • Alcoholism.
  • Alzheimer's Disease.
  • Amenorrhea.
  • Amyloidosis.
  • Anorexia Nervosa.
  • Bulimia Nervosa.
  • Chronic Obstructive Pulmonary Disease.
  • Cirrhosis.

How do you treat Hashimoto's with normal TSH? ›

Synthetic levothyroxine taken orally at an appropriate dose, is inexpensive, very effective in restoring normal thyroid hormone levels, and results in an improvement of symptoms of hypothyroidism. Most patients with Hashimoto's thyroiditis will require lifelong treatment with levothyroxine.

Can thyroid problems be missed in a blood test? ›

The answer is no. Current thyroid laboratory testing is very sensitive and specific for thyroid disorders, so when the laboratory tests are normal, thyroid disease is highly unlikely and another cause of symptoms should be sought.

Is TSH enough to diagnose hypothyroidism? ›

While a simple TSH blood test is a very accurate way to screen for hypothyroidism, an elevated TSH alone may not be enough to confirm the diagnosis.

What does thyroid fatigue feel like? ›

You may feel nervous, moody, weak, or tired. Your hands may shake, your heart may beat fast, or you may have problems breathing. You may be sweaty or have warm, red, itchy skin. You may have more bowel movements than usual.

What is silent thyroiditis? ›

Definition. Silent thyroiditis is an immune reaction of the thyroid gland. The disorder can cause hyperthyroidism, followed by hypothyroidism. The thyroid gland is located in the neck, just above where your collarbones meet in the middle.

Can you have hashimotos symptoms without hypothyroidism? ›

Not everyone with Hashimoto disease has hypothyroidism. If you have positive TPO antibodies but thyroid hormone levels are normal, then observation with repeated thyroid function tests is often recommended.

What TSH level indicates Hashimoto's disease? ›

However, the authors used a “prevalence of Hashimoto's thyroiditis” factor to determine the upper limit of TSH and found a range of 2.6-2.9 to be more appropriate. They state that this correlates with the National Academy of Clinical Biochemists findings of a 2.5 upper limit for TSH levels.

What can be mistaken for Hashimoto's? ›

Hashimoto's thyroiditis is an autoimmune disease in which the immune system attacks the thyroid gland.
...
Conditions that can be confused with Hashimoto's include:
  • chronic fatigue syndrome.
  • depression.
  • fibromyalgia.
  • premenstrual syndrome, or PMS.
  • an anxiety disorder.
  • cyclothymia, a form of bipolar disorder.

Can stress and anxiety cause thyroid problems? ›

The Connection Between Chronic Stress and Thyroid Health

Under stress, your body releases the hormone cortisol. Too much cortisol can interfere with thyroid hormone production: It can stimulate the thyroid to work harder to create sufficient amounts of thyroid hormone.

What causes thyroid flare up? ›

Your lifestyle: Lack of sleep or insomnia, high levels of stress, as well as being too sedentary—or conversely—overtraining with high-intensity exercise are triggers for flare-ups.

Can a thyroid test be wrong? ›

Outside factors may affect the results of your thyroid blood test. This can include whether or not you ate before your test, what time of day you take the test, and things like stress, diet, and sleep. Some medications and supplements may also affect your results. This may be because they change your thyroid function.

What blood test is used to detect Hashimoto? ›

Anti-thyroid antibodies (ATA) tests, such as the microsomal antibody test (also known as thyroid peroxidase antibody test) and the anti-thyroglobulin antibody test, are commonly used to detect the presence of Hashimoto's thyroiditis.

What is a complete thyroid panel test? ›

The tests included in a thyroid panel measure the level of thyroid hormones in the blood. A thyroid panel usually includes tests for: TSH (thyroid-stimulating hormone) Free T4 (thyroxine) Free T3 or total T3 (triiodothyronine)

Why is my thyroid enlarged but my tests are normal? ›

Nontoxic goiter: If you have an enlarged thyroid but normal thyroid levels (euthyroid), it's a nontoxic goiter. In other words, you don't have hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid).

What are 4 major clinical symptoms of hyperthyroidism? ›

Symptoms
  • Unintentional weight loss, even when your appetite and food intake stay the same or increase.
  • Rapid heartbeat (tachycardia) — commonly more than 100 beats a minute.
  • Irregular heartbeat (arrhythmia)
  • Pounding of your heart (palpitations)
  • Increased appetite.
  • Nervousness, anxiety and irritability.
14 Nov 2020

How does thyroiditis make you feel? ›

Symptoms may include pain in the throat, feeling generally unwell, swelling of the thyroid gland and, sometimes, symptoms of an overactive thyroid gland or symptoms of an underactive thyroid gland. Symptoms usually get better when the infection is treated with antibiotics.

Can you have high thyroid antibodies and normal TSH? ›

Thyroid Peroxidase Antibodies

Having only the TPO antibodies present with normal TSH and free T4 levels means that your thyroid is functioning normally and you don't have hypothyroidism, but it does mean that you may have Hashimoto's disease.

What does a Hashimoto's flare up feel like? ›

When Hashimoto's thyroiditis flares up, you may begin to feel some of the symptoms of hypothyroidism. These can include things like: fatigue. aches and pains in your muscles and joints.

Can you have normal TSH levels but still be hyperthyroid? ›

Subclinical hyperthyroidism is a condition in which you have low levels of thyroid stimulating hormone (TSH) but normal levels of T3 and T4. T4 (thyroxine) is a major hormone secreted by your thyroid gland. T3 (triiodothyronine) is a modified version of T4.

How often is thyroid disease misdiagnosed? ›

Experts believe that between 40 percent and 60 percent of people with thyroid disease do not know they have it.

How many hours fasting is required for thyroid test? ›

Usually,no special precautions including fasting need to be followed before taking a thyroid test. However, your pathologist can guide you better. For example, if you have to undergo some other health tests along with thyroid hormone levels, you may be asked to fast for 8-10 hours.

What does borderline thyroid mean? ›

Subclinical (borderline) hypothyroidism

Some people have a mildly underactive thyroid, with few or no symptoms. Doctors call this subclinical hypothyroidism. If you have this, your blood test will show that your TSH is raised but your free T4 is normal. This is fairly common, especially in older people.

Are thyroid blood tests always accurate? ›

Today's TSH tests are very accurate and sensitive; they can help diagnose even the mildest cases of hypothyroidism. It's important to understand that just because your TSH test comes back normal, it does not rule out the possibility of you being hypothyroid.

How do you rule out hypothyroidism? ›

A blood test measuring your hormone levels is the only accurate way to find out whether there's a problem. The test, called a thyroid function test, looks at levels of thyroid-stimulating hormone (TSH) and thyroxine (T4) in the blood. Doctors may refer to this as "free" T4 (FT4).

Can you have a normal TSH and abnormal T3 T4? ›

Why is my TSH low but my T3 and T4 are normal? Low TSH and normal T3 and T4 can indicate subclinical (mild) hyperthyroidism. This has a number of potential causes, including pregnancy, Graves' disease, an enlarged thyroid (goiter) with multiple nodules, thyroiditis, and thyroid adenoma.

How can I overcome thyroid fatigue? ›

Avoiding or reducing caffeine can help with your sleep and may make you feel less tired. Reducing alcohol levels may also improve your sleep quality. If you have hypothyroidism or hyperthyroidism you are advised to avoid preparations and supplements high in iodine as it can make your condition worse.

Can your thyroid make you feel shaky? ›

An overactive thyroid can also cause the following physical signs: a swelling in your neck caused by an enlarged thyroid gland (goitre) an irregular and/or unusually fast heart rate (palpitations) twitching or trembling.

Can thyroid make you feel cold? ›

Feeling cold

Hypothyroidism can slow down metabolism, which can lead to a drop in core body temperature. As such, some people with low levels of thyroid hormones may feel cold all the time or have a low tolerance of the cold. This feeling of coldness can persist, even when in a warm room or during the summer months.

How long does it take for thyroid symptoms to go away? ›

The amount of time it takes to treat hyperthyroidism can change depending on what caused it. If your healthcare provider treats your condition with antithyroid medications (methimazole or propylthiouracil) your hormone levels should drop to a healthy level in about six to 12 weeks.

What drugs can cause thyroiditis? ›

Drug-induced thyroiditis: This is a condition caused by the use of medications such as amiodarone, interferons, lithium and cytokines. It only occurs in a small fraction of people using these drugs.

What helps reduce thyroid inflammation? ›

How Can We Decrease Inflammation?
  • Consume adequate nutrients from foods and supplements that decrease inflammation in the thyroid. ...
  • Strengthen gut health. ...
  • Lower stress. ...
  • Eat a nutrient dense, low-carb diet. ...
  • Get proper thyroid medication. ...
  • Eliminate or greatly reduce thyroid inflammation triggers.

How quickly does Hashimoto progress? ›

It takes an average of 10 years to be diagnosed with Hashimoto's between the start of the autoimmune attack on the thyroid gland, and when the person is diagnosed.

How can you tell the difference between lupus and Hashimoto's? ›

Both lupus and Hashimoto's disease are immune system disorders, and people with lupus commonly have thyroid issues. Hashimoto's disease directly affects your thyroid gland, resulting in hypothyroidism, while lupus impacts multiple organ systems in your body.

Do you have to be dairy free with Hashimoto's? ›

Consider avoiding dairy

In a study of 83 women with Hashimoto's thyroiditis, 75.9% were diagnosed with lactose intolerance ( 17 ). If you suspect lactose intolerance, cutting out dairy may aid digestive issues, as well as thyroid function and medication absorption.

Can you have Hashimoto's with a normal TSH? ›

It's possible to have Hashimoto's disease but not yet have a severe enough case that your thyroid function has been impacted. In these cases, you can have Hashimoto's disease with normal TSH.

Do you treat Hashimoto's if TSH is normal? ›

HOW IS HASHIMOTO THYROIDITIS TREATED? Patients with elevated TPO antibodies but normal thyroid function tests (TSH and Free T4) do not require treatment.

What are early warning signs of thyroid problems? ›

7 Early Warning Signs of Thyroid Issues
  • Fatigue.
  • Weight gain.
  • Weight loss.
  • Slowed heart rate.
  • Increased heart rate.
  • Sensitivity to heat.
  • Sensitivity to cold.
11 Jan 2021

Can Hashimoto's turn into lupus? ›

For example, women with Graves disease or Hashimoto thyroiditis are at greater than 10‐fold risk of developing lupus (risk ratio [RR] 11.69 [95% CI 6.23‐20.0; P < 0.001] and RR 14.64 [95% CI 3.02‐47.5; P < 0.001], respectively).

What organs does Hashimoto's affect? ›

Hashimoto's disease is an autoimmune disorder affecting the thyroid gland. The thyroid is a butterfly-shaped gland located at the base of the neck just below the Adam's apple. The thyroid produces hormones that help regulate many functions in the body.

Can thyroid symptoms come and go? ›

Graves' disease often causes symptoms of hyperthyroidism. Graves' disease can also affect your eyes and skin. Symptoms can come and go over time.

Can you have a normal TSH and abnormal T3 T4? ›

Why is my TSH low but my T3 and T4 are normal? Low TSH and normal T3 and T4 can indicate subclinical (mild) hyperthyroidism. This has a number of potential causes, including pregnancy, Graves' disease, an enlarged thyroid (goiter) with multiple nodules, thyroiditis, and thyroid adenoma.

Can you have thyroid nodules with normal labs? ›

The larger the thyroid nodule, the more likely a low TSH was present. However, 70% of the patients who had scans for evaluation of a thyroid nodule had normal TSH values and 49% of patients with normal TSH values were found to have an autonomous functioning nodule.

Can thyroid problems be missed in a blood test? ›

The answer is no. Current thyroid laboratory testing is very sensitive and specific for thyroid disorders, so when the laboratory tests are normal, thyroid disease is highly unlikely and another cause of symptoms should be sought.

What can mimic hyperthyroidism? ›

  • Alcoholism.
  • Alzheimer's Disease.
  • Amenorrhea.
  • Amyloidosis.
  • Anorexia Nervosa.
  • Bulimia Nervosa.
  • Chronic Obstructive Pulmonary Disease.
  • Cirrhosis.

Which is more important T4 or TSH? ›

Across many clinical studies it seems clear that the physiologic effects of low or high thyroid function correlate much more strongly to free T4 and free T3 levels than to TSH levels. In fact, correcting for changes in T4 and T3 levels there appeared to be no correlation between TSH level and body function.

How do you treat Hashimoto's with normal TSH? ›

Synthetic levothyroxine taken orally at an appropriate dose, is inexpensive, very effective in restoring normal thyroid hormone levels, and results in an improvement of symptoms of hypothyroidism. Most patients with Hashimoto's thyroiditis will require lifelong treatment with levothyroxine.

What TSH level indicates Hashimoto's disease? ›

However, the authors used a “prevalence of Hashimoto's thyroiditis” factor to determine the upper limit of TSH and found a range of 2.6-2.9 to be more appropriate. They state that this correlates with the National Academy of Clinical Biochemists findings of a 2.5 upper limit for TSH levels.

Can you have normal TSH and still have hyperthyroidism? ›

An individual may have normal TSH levels but still not be utilizing thyroid stimulating hormone correctly, leading to a thyroid imbalance. Your doctor should also be looking at your other values such as T3 and T4 levels. These can provide more information about how well your thyroid is actually functioning.

Can you have goiter with normal TSH? ›

Many people with goitre have normal thyroid hormone levels but some can have an underactive thyroid (hypothyroidism) or an overactive thyroid (hyperthyroidism).

What does thyroid fatigue feel like? ›

You may feel nervous, moody, weak, or tired. Your hands may shake, your heart may beat fast, or you may have problems breathing. You may be sweaty or have warm, red, itchy skin. You may have more bowel movements than usual.

What can mess up a thyroid test? ›

Outside factors may affect the results of your thyroid blood test. This can include whether or not you ate before your test, what time of day you take the test, and things like stress, diet, and sleep. Some medications and supplements may also affect your results. This may be because they change your thyroid function.

What is the best test to check for thyroid problems? ›

A blood test measuring your hormone levels is the only accurate way to find out whether there's a problem. The test, called a thyroid function test, looks at levels of thyroid-stimulating hormone (TSH) and thyroxine (T4) in the blood. Doctors may refer to this as "free" T4 (FT4).

Why is my thyroid enlarged but my tests are normal? ›

Nontoxic goiter: If you have an enlarged thyroid but normal thyroid levels (euthyroid), it's a nontoxic goiter. In other words, you don't have hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid).

Can stress and anxiety cause hyperthyroidism? ›

As mentioned earlier, hyperthyroidism isn't caused by stress, but that doesn't mean the two aren't related. For those that already have symptoms of hyperthyroidism, physical or mental stress can make them even worse.

What are 4 major clinical symptoms of hyperthyroidism? ›

Symptoms
  • Unintentional weight loss, even when your appetite and food intake stay the same or increase.
  • Rapid heartbeat (tachycardia) — commonly more than 100 beats a minute.
  • Irregular heartbeat (arrhythmia)
  • Pounding of your heart (palpitations)
  • Increased appetite.
  • Nervousness, anxiety and irritability.
14 Nov 2020

Videos

1. Why Do I Have Thyroid Symptoms If My TSH Is Normal
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2. What are the normal levels of T3, T4,TSH & causes for Thyroid Disorders? - Dr. Sanjay Panicker
(Doctors' Circle World's Largest Health Platform)
3. Signs of Low Thyroid Level (Hypothyroidism), & Why Symptoms Occur
(JJ Medicine)
4. Thyroid problems - most common thyroid problems, symptoms and treatment
(Healthchanneltv / cherishyourhealthtv)
5. Do You Have Thyroid Problems With Normal TSH?
(Southwest Integrative Medicine)
6. Hyperthyroidism & Thyroid Storm Signs & Symptoms (& Why They Occur)
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