Thyroid Function Checking Package – Premium

  • Price: VND 1,000,000
  • Exam frequency: 6 months/ test
  • Sex: Both male and female
  • Age group: Not restricted
  • Result: Within 2,5 hours after the sample collection from Lab.

1. Overview Of The Test Package


The thyroid gland is one of the important endocrine glands of the body. Thyroid hormone affects our metabolism, it helps to maintain a stable amount of calcium in our blood, generates energy for the body’s activity, supports the oxygen supply for the metabolism in organ tissues, and provokes mental activities of the nervous system. Therefore, thyroid-related diseases such as hypothyroidism, hyperthyroidism, goiter, Basedow’s goiter,… affect the patient’s mobility and general health.

2. Test Subjects

  • Individuals who show symptoms of an overactive thyroid or underactive thyroid.
  • Individuals who have a family history of thyroid conditions.
  • Individuals have an autommune condition such as autoimmune thyroditis.

3. This Test Package Comprises

Blood testing is the main testing used in this test package.

Besides, Diag provides other services (not included in this test package) like thyroid ultrasound and consultant with related doctor.

4. This Test Will Indicate The Following Stats

  • CBC
    A complete blood count (CBC) is a process that examines several components and features circulating in your blood, including white blood cells, red blood cells, and platelets. This test is considered as a screening method to determine an individual’s general health status. CBC is popular in routine health check-ups, to screen for a wide range of diseases and causes in general.
  • Tg
    Tg stands for Thyroglobulin, a protein synthesized only by thyroid follicular cells, which is released along with thyroid hormones into the bloodstream. Tg test is designated to help monitor the treatment of recurrent thyroid cancer, diagnosing thyroid tumors, thyroid disorders, postpartum thyroiditis, and hypothyroidism. Tg in a normal person ranges from 0.2-70 ng/mL.
  • Anti-Tg
    Anti-Tg is an antibody that fights against Thyroglobulin (Tg). When there is an autoimmune condition in the body, it disrupts the production of Tg and produces Anti-Tg antibodies. An autoimmune condition occurs when the immune system creates antibodies that attack the body’s healthy cells. Anti-Tg antibodies falsify the true value of Tg. As a result, the Anti-Tg test is often ordered to be performed along with the Tg test to find out the true value of Tg.
    The anti-Tg test is used to monitor the treatment of recurrent thyroid cancer, and diagnose thyroid tumors, thyroid disorders, postpartum thyroiditis, and hypothyroidism. Anti-TG level <115 IU/mL across all ages is considered normal.
  • Anti-TPO
    Anti Tpo is an indicator of antibodies that fight against Thyroperoxidase in the body. This is an antibody that is available in a person’s body when their immune system mistakenly targets components of the thyroid gland or thyroid protein, leading to chronic thyroid inflammation, tissue damage, and/or dysfunction of the thyroid.
    An anti-TPO test is indicated for the diagnosis of autoimmune thyroid disease, assisting in finding the cause of goiter and diagnosing thyroid dysfunction. Anti-TPO is usually <34 IU/mL across all ages.
  • FT3
    Triiodothyronine (T3) is a hormone that supports the action of thyroid hormone on different organs. It helps to ensure the metabolism and the operation of the functional organs in the body. The generated T3s are mostly bound to proteins. A small part of which circulates in free form (FT3). FT3 is the part responsible for the biological activity of the thyroid gland. With this fact, measuring FT3 levels in the diagnosis of thyroid diseases will make the test more reliable and accurate.
    The FT3 test is indicated to evaluate thyroid function, and to monitor the effectiveness of the treatment procedure in people with thyroid disease. FT3 in normal people ranges from 3.1-6.8 pmol/L.
  • FT4
    Thyroxine (T4) is a thyroid hormone that plays a role in the overall metabolism of the body. Free Thyroxine (FT4) is the free form of T4. FT4 is biologically active, which makes measuring FT4 concentration in the diagnosis of thyroid diseases become more stable and precise.
    The FT4 test is indicated to evaluate thyroid function, and to monitor the effectiveness of treatment in people with thyroid disease. FT4 in a healthy person ranges from 12-22 pmol/l.
  • PTH
    Parathyroid Hormone (PTH) is a hormone made by four small parathyroid glands behind the thyroid gland in the neck area. The hormone PTH affects directly the bones, kidneys, and intestines of the body to increase the release of calcium from the bones into the bloodstream.
    The PTH test is indicated to determine the change in calcium levels in the body. Therefore, the test helps to monitor and detect parathyroid gland disorders, check the activity of the parathyroid, and treat parathyroid-related diseases. PTH in a healthy person’s plasma ranges from 15‑65 pg/mL.
  • TSH
    Thyroid-stimulating hormone (TSH) is produced by the pituitary gland in the brain to make and release thyroid hormones into the bloodstream. The function of TSH is to help stimulate the production and release of Triiodothyroxine (T3), Thyroxin (T4) in the body.
    The TSH test is designated to check whether the thyroid gland is working properly. Thus, the test has a significant role in the diagnosis and monitoring of pathologies that are related to thyroid dysfunction such as hyperthyroidism, hypothyroidism, and Basedow. The TSH hormone in a human’s body ranges from 0.4 to 5 mIU/L.

*Note: Laboratory results must always be correlated with the clinical findings of the patient.

5. This Test Will Frequently Indicate The Following Diagnosis

The thyroid functions normally (Healthy thyroid).

  • TSH: Normal
  • FT4: Normal
  • T3 or FT3: Normal

Some changes occur in the function of the thyroid gland due to some certain diseases (Nonthyroidal illness or Sick euthyroid syndrome).

  • TSH: Normal or decreased
  • FT4: Normal or decreased
  • T3 or FT3: Decreased

Subclinical hypothyroidism or those who are being treated for Hypothyroidism but are not getting enough thyroid hormone can also get this result.

  • TSH: Increased
  • FT4: Normal
  • T3 or FT3: Normal

Hypothyroidism due to thyroid-related problems (primary hypothyroidism).

  • TSH: Increased
  • FT4: Normal
  • T3 or FT3: Decreased

Hyperthyroidism caused by some problems of the signaling hormone from the pituitary gland (central hyperthyroidism) or due to a problem with the thyroid hormone receptors (thyroid hormone autoimmunity).

  • TSH: Normal or increased
  • FT4: Increased
  • T3 or FT3: Increased

Subclinical hyperthyroidism; this result can also be produced when the patient is hypothyroid but is being given too much thyroid hormone.

  • TSH: Decreased
  • FT4: Normal
  • T3 or FT3: Normal

Hyperthyroidism caused by the thyroid gland making too much of the thyroid hormone T3 in its active form, known as Thyrotoxicosis (or T3 Toxicosis) – uncommon result

  • TSH: Decreased
  • FT4: Normal
  • T3 or FT3: Increased

Hyperthyroidism results from the gland making too much thyroid hormones (primary hyperthyroidism)

  • TSH: Decreased
  • FT4: Increased
  • T3 or FT3: Increased

Hypothyroidism due to some diseases in the hypothalamus or the pituitary gland fails to produce one or more hormones, causing problems with the controlling of the thyroid gland (Central hypothyroidism)

  • TSH: Decreased
  • FT4: Decreased
  • T3 or FT3: Decreased

6. Related Questions

  • How frequently should I ask for a thyroid function test?
    Every 6 months.
  • Should I take any precautions before the test?
    You should get enough sleep, don’t eat anything else, and avoid alcoholic drinks for about 8-10 hours before taking blood samples.
  • What are the differences between the thyroid premium function test and the thyroid function test?
    The Advanced test is designed as a more specific pathology screening, with multiple index reference results related to the thyroid and the parathyroid. The Advanced test is indicated for patients with thyroid autoimmune pathology.

For further questions concerning Diag’s thyroid function test and other symtoms of overative or underactive thyroids, please kindly contact the customer service of Diag. Our representatives will get back to you as soon as possible.