Analysis of thyroid hormones: features of delivery, interpretation, price

A blood test for thyroid hormones is one of the main diagnostic procedures that help identify abnormalities in the workings of the largest structure of the human endocrine system. With it, you can determine the presence of the disease at the initial stage of its development, and prevent its progression, which can lead to serious consequences.

Table of contents:
  • Indications and preparation for the test
  • What hormones to take?
  • Features of the preparation and conduct of the test
  • Assessment of the data obtained
  • Analysis of thyroid hormones in expectant mothers. Prices for the service
  • Prices for analyzes

Like any other laboratory study, this test requires careful preparation. Non-observance of generally accepted rules entails a distortion of the results, which may adversely affect the further treatment regimen.

to contents ↑

Indications and preparation for the test

So, if you are interested in the question of how to check the thyroid gland, then any endocrinologist will immediately answer: you must first pass blood tests for hormone levels. Of course, only on the results of laboratory tests to make an accurate diagnosis and prescribe treatment is impossible. However, it is with their help that the doctor will be able to decide on the need for further, instrumental, diagnostic measures.

So, when is a thyroid examination necessary? It is important if under the influence of certain factors there has been a failure in the hormone-producing function of the pituitary gland.

Endocrinologists focus on conducting venous blood tests in the following situations:

  • if the patient has complaints of symptoms characteristic of hypo- or hyperthyroidism;
  • in delaying sexual or physical development in children and adolescents;
  • with a prolonged absence of menstruation( menarche) in young girls;
  • for suspected goiter development;
  • with pronounced symptoms of arrhythmia;
  • if you can not get pregnant for a long period of time.

The situations when it is necessary to donate blood for thyroid hormones also include alopecia( alopecia), developed for unknown reasons, and the need to control the effectiveness of therapy for hyperthyroidism or hypothyroidism.

In addition, there are other indications for performing this test. Thus, tests for examination of the thyroid gland are necessarily carried out on patients with suspected development( or confirmed by the presence):

  • systemic lupus erythematosus( SLE);
  • rheumatoid arthritis;
  • dermatomyositis;
  • systemic scleroderma.

Note. If during the study deviations from the generally accepted norms of the thyroid hormones were detected, this does not always indicate the presence of pathology. As a rule, the doctor prescribes repeated tests to ensure that the previously obtained data have not been distorted.

Provided that all the rules for preparing and donating blood for the study are observed, shifts in indicators may indicate the development of inflammatory processes in thyroid tissue. Moreover, they can affect other organs, so in such a situation it is impossible to do without medical intervention.

to contents ↑

What hormones to take?

From the above, a completely logical question arises: which thyroid hormones are usually tested by patients? Of course, all studies without exception are prescribed only by a doctor - an endocrinologist, a therapist, an andrologist, a gynecologist, or another specialist. The determination of the concentration of a particular substance depends on the purpose for which the test is carried out and what data the treating doctor intends to obtain.

But there are major hormones of the thyroid gland, according to the content in the blood of which one can judge its functioning. These include:

  1. Thyroid-stimulating hormone, or TSH.This substance is produced by the pituitary cells and is responsible for the secretion of other thyroid hormone units. Therefore, if the question arose, what hormones of the thyroid gland must be taken without fail, then the level of this substance should first be identified.
  2. Triiodothyronine, or T3 is a hormone that consists of 3 iodine units, and is responsible for saturating the body's cells with oxygen. It can be in two states: free and bound. In most cases, endocrinologists are interested in indicators of free T3, although an analysis can also be made to determine the level of total triiodothyronine.
  3. Thyroxine( tetraiodothyronine, T4).He is the precursor of the hormone triiodothyronine, which is formed at the moment when one iodine unit splits off from T4.Thyroxin contributes to the full synthesis of proteins in the body, so the test for determining its content includes a list of tests for the thyroid gland, which you need to take first. Read more in the articles "Normal indicators of T4 in general" and "What does the increase in T4 free indicate."

In addition to detecting the level of the main thyroid hormone units, it is also necessary to know the indicators of antibodies to thyroglobulin. Their presence in the blood gives good reason to believe that hidden pathological processes occur in the patient’s body, which can pose a serious threat to his health.

to contents ↑

Features of the preparation and conduct of the

test Having understood what tests are performed for thyroid hormones, it is necessary to move on to an equally important question: how to prepare for this process. The study will require only venous blood, and that the data were not distorted, you need:

  1. Approximately 30 days before the test date, to cancel all hormone-containing drugs. If the patient is undergoing a course of iodotherapy, he must inform the attending physician about this. As a rule, drugs containing iodine are canceled several days before the biomaterial is collected.
  2. On the eve of, as well as on the day of analysis, high physical activity should be avoided. Excessive intensity of the load leads to the release of a large number of hormones in the blood, which will significantly affect the final data of the study.
  3. No smoking on the day of the test. You should also exclude sex.
  4. For several days before the study, you must observe the daily regimen. It is necessary to alternate rest and physical activity, sleep and wakefulness.

Note. Having come to the clinic to donate blood for the analysis, the patient runs the risk of receiving unreliable test totals!

As you can see, preparing for thyroid hormone tests is quite simple. However, the neglect of even one of the above rules can lead to changes in the hormonal balance, so this issue must be approached very seriously and responsibly!

Biological material collection is carried out in the morning. In this case, the patient must refuse breakfast, and before manipulation - to rest for 15-20 minutes.

Women can donate blood on any day of the menstrual cycle - this will not affect the result of the study. This is explained by the fact that TSH, T3 and T4 are pituitary hormones, but have no direct relation to the work of the reproductive system. Consequently, a retest, even if the woman came to the analysis during the menstruation period, would not be necessary if all the rules of preparation for the manipulation were followed.

With regard to the question of how much the analysis is done for thyroid hormones, it will be possible to pick up the form with the results the next day after the manipulation of the venous blood sampling.

to contents ↑

Evaluation of the data obtained

The norms of thyroid gland hormones play a great role. It is for him that the results of the study are interpreted, and further measures taken by the attending physician depend.

Thus, the optimal indicators of TSH are considered to be numbers that fluctuate within 0.4 - 4.0 IU / l of blood. The content of free triiodothyronine should not be below 2.6, or go beyond 5.7 pmol. For free thyroxin, the normal concentration is from 9.0 to 22.0 pmol / l of blood.

If these studies indicate an increase or decrease in the indicators described above, it is important to ensure that they are accurate. This is especially necessary in the absence of patient complaints of deterioration of health and various ailments.

What can tests indicate when diagnosing a thyroid gland? Clinical studies of venous blood contribute to the identification of hyperthyroidism( thyrotoxicosis) and hypothyroidism, which are equally dangerous to the patient's health.

to contents ↑

Analysis of thyroid hormones in expectant mothers. Prices for the service

How to check the thyroid gland in women in an "interesting position"?The essence of hormone tests and preparation for their conduct is the same, but the goals and indicators of the norm are somewhat different.

So, if we talk about the concentration of thyrotropin, then during fetal fetal development, it becomes much less, and this is not a deviation. During this period, there is an increase in the content of hCG, which in some way replaces the TSH, ensuring the normal functioning of the thyroid gland.

However, the answer to the question of which thyroid hormones to pass to a woman who is expecting a baby is unchanged: TSH, T4 and T3.Of course, there are other hormones of the hypothalamic-pituitary system, which play a significant role during pregnancy. In particular, it is prolactin, which is responsible for the normal intrauterine development of the fetus and the production of milk in the newly-made mother.

However, if we talk about where to begin the examination of the endocrine system and, in particular, the thyroid gland in the future mom, the main task of the doctor at this stage is to determine the concentration of thyrotropin, thyroxine and triiodothyronine.

to contents ↑

Prices for analyzes

In most clinics, the determination of thyroid hormone content is a paid service. But in this case, the patient should be guided by the well-known phrase “health is more expensive”, because if you launch an existing disease, the costs of treatment will significantly exceed the price of the analysis for the hormones produced by the thyroid gland.

So, to make a test for TSH, on average, you have to pay 340 rubles. TG analysis will cost approximately 630 rubles.

A study on the maintenance of T3 and T4 free will cost 370 rubles( for each individual hormone).But it is better to combine both tests at once. The total cost of tests for thyroid hormones in this case will be 740 rubles.

Determining the amount of antibodies to TG and TPO will cost 900 rubles( 450 rubles for each study).One of the most expensive is the assay for antibodies to thyrotropin receptors. Such a manipulation costs about 1,400 rubles.

Of course, in order to get a clearer picture, it is desirable to go through a whole “package” of laboratory tests. Regarding how much the complex of tests for thyroid hormones costs, it is better to ask in advance in the clinic where diagnostic procedures will be carried out. The average price for all the above tests is 5300 - 5500 rubles.

It is important to know not only how to take a test for thyroid hormones, but also where to do it. Each clinic has its own equipment and technology of the test. Therefore, you should not take any action without first consulting with your doctor!