Thyroid hormones TSH, T4, T3 - norms for children

The mobile Internet audience is growing rapidly

66 million Russian users use it along with desktop, and 20 million already access the Internet only from mobile devices - this is 15% more than a year ago.

Pages on smartphones may load slowly

There are several reasons: an unstable network connection, low Internet speed, or the site is not adapted for mobile devices. If you have to wait too long, users will move to other sites.

We offer users Turbo technology

It significantly speeds up the loading of text, images and videos on smartphones and helps save time and megabytes of mobile Internet.

Monetization

Yandex Advertising Network

RTB blocks can display ads from tens of thousands of Yandex advertisers. It is convenient to manage blocks from the partner interface: among them is the popular and profitable Motion.

Direct advertising sales

Manage direct advertiser campaigns through ADFOX or other services.

Business model combinations

Using ADFOX, you can transfer impressions that were not purchased by direct advertisers to YAN, as well as compare the rates of all monetizers in Dynamic monetization.

How to prepare for a blood test for thyroid hormones

To get the most reliable results of a blood test for T3, T4 and TSH, you need to donate blood only on an empty stomach. On the eve of the visit to the laboratory, it is necessary to minimize physical and psycho-emotional stress, exclude any medical procedures and physical therapy. If a child is forced to take any medications for health reasons, the doctor must be informed about this before taking the test. Many medications affect the level of hormones in the blood.

Deficiency or excess of thyroid hormones in the blood is a serious problem for a patient of any age. Children react especially quickly to any deviations from the norm, since their bodies are in the stage of active development. It is important not to delay contacting a doctor if any suspicious symptoms appear. Experienced endocrinologists at the SM-Doctor clinic will prescribe the necessary tests, tell you about the rules for preparing for them, and interpret the results as part of a comprehensive diagnosis. Let your baby's endocrine system be under control!

Development plan

• Support for multimedia content (illustrations, videos)
• Support for third party ad networks via ADFOX
• Support for third-party analytics counters (Google Analytics, Mail.Ru, Rambler Top 100, Mediascope)
• Speed ​​up loading Turbo pages by 4 times

• Tables, lists, quotes
• Image and photo galleries
• Displaying comments
• Embed codes for content from YouTube, Vimeo, Instagram, Twitter
• “Endless” feed (block “You may be interested in”)
• Site navigation
• Share button
• Additional advertising spaces
• Advanced analytics capabilities
• Ad rendering speed

• API for publishing content
• Call button, chats and feedback forms
• Support for content embed codes from VKontakte and Odnoklassniki
• Design customization in CSS
• Supports GIF animation and video players
• Editor for debugging Turbo pages

• Rating block
• Media content gallery with slider
• Quickly view a larger image by clicking
• Content block and anchor links
• Sidebar – new menu block
• Additional design types for the “You may be interested in” block
• Support for embedded content from Yandex.Maps and Yandex.Music
• Search form - on your website or with sending a request to search engines
• Impressions of new pages in Turbo format when following links from Turbo pages
• Product cards for online stores
• More statistics in Metrica and the ability to use goals

• Video in Turbo
• New page types
• Poll block
• Advertising optimization - new formats
• The ability to place a product on Turbo pages in one click so that the user does not leave the accelerated version of the store
• Custom blocks
• Authorization
• Possibility to leave a comment
• Advanced features of Metrica
• Feedback from webmasters

• Expanded appearance customization options

  We have started testing the display of elements created by site owners.
  For example, Turbo pages can have complex interactive components using JavaScript, such as diagrams of the placement of chess pieces or players on the field. But there should be more tools that allow you to flexibly customize Turbo pages - and we, of course, will continue to add them. Please tell us what kind of customization is required for the Turbo pages of your website - leave your contacts in this form, and a specialist from the development team will contact you to clarify the details.

• New opportunities for online stores

  Online payment and shopping cart will appear in the e-commerce arsenal. Moreover, in the Turbo version of the store you will be able to make purchases directly from the list of products, and after going to the cart, select delivery options. We will add the ability to pre-fill fields (for example, name or contacts) to the order form - if the site visitor is authorized in his Yandex account. It will become more convenient and easier for users to interact with the Turbo version of the store - there will be fewer failures and more conversions.

• Advanced analytics in Yandex.Metrica

  The Metrics Webvisor tool will help you analyze in detail the behavior of visitors to Turbo pages.
  It records the actions of visitors on the site and shows them in video format - this way you can identify problems in navigation, logic and usability, and as a result, increase site conversion. Metrica will also feature new reports to analyze the effectiveness of the Turbo version of online stores.

• New blocks and widgets on Turbo pages

  By the end of the year, Turbo pages will have:
  a multi-level menu,

• customizable dynamic forms,
• Apester platform embeds for surveys and quizzes,
• cards for grouping content on a page,
• possibility of fixing the site header,
• Scrolling support when viewing an image gallery,
• “Expand” button to view articles on the desktop,
• “breadcrumbs” to facilitate navigation on the site,
• opportunity to comment on articles.

And new widgets - including Market and Zen widgets
- will increase traffic and expand the site’s audience.

Indications for prescribing the study

Free thyroxine (T4 free, Free Thyroxine, FT4) is a fraction of the main thyroid hormone, thyroxine (T4), not bound to proteins.
The study is aimed at assessing thyroid function. The test is carried out:

• with clinical signs of increased or decreased activity of the thyroid gland;
• with an increase in the size of the thyroid gland (goiter);
• with a previously identified change in the level of thyroid-stimulating hormone;
• to monitor treatment for established thyroid diseases.

No. 55 Laboratory assessment of thyroid function

Free thyroxine (Free Thyroxine, FT4) In this study, the concentration of the free fraction of thyroxine, the dominant thyroid hormone, is determined in the blood serum. This study is advisable to carry out in the presence of signs of hypothyroidism or thyrotoxicosis, with a decreased or increased level of TSH, as well as with identified diffuse toxic goiter.

Up to 1 business day

580 RUR Add to cart

To improve your appearance

Support for Turbo pages on a wider class of mobile screens - so that your Turbo pages look equally good not only on mobile, but also on tablets.

Transferring html layout directly to RSS. To make it more convenient for you to work with the appearance of Turbo pages, we will add the ability to transfer your own html layout directly to RSS. It will be possible to transfer ready-made blocks of your website to the Turbo page practically without changes and not waste time re-configuring the appearance.

Settings for basic design elements without CSS. And so that you can save time on developing your own CSS, let's add the following features:

• customize color, font, logo and other elements directly in Webmaster,
• quickly enable light and dark themes on your website.

What can affect the result

1. Taking medications: iodine, thyroid hormones, thyreostatics (drugs that reduce the production of thyroid hormones), oral contraceptives (birth control pills), anabolic steroids, glucocorticosteroids, antibiotics, heparin, anticonvulsants, propranolol (a beta-blocker drug), diuretics (diuretics), etc.
2. Recent thyroid surgery, radiotherapy.
3. Increased body weight.
4. Time to apply a tourniquet when drawing blood.
5. Time of blood donation: the highest level of free thyroxine is recorded from 8:00 to 12:00, the lowest - from 20:00 to 03:00.
6. Time of year: the level of free thyroxine in the autumn-winter period is lower than in summer.
7. Pregnancy (free thyroxine levels fluctuate).

You can donate blood for free T4 at the nearest INVITRO medical office.
A list of offices where biomaterial is accepted for laboratory research is presented in the “Addresses” section. Interpretation of study results contains information for the attending physician and is not a diagnosis.
The information in this section should not be used for self-diagnosis or self-treatment. An accurate diagnosis is made by the doctor, using both the results of this examination and the necessary information from other sources: medical history, results of other examinations, etc. The thyroid gland is the largest gland of the endocrine system.

It accumulates iodine and produces iodine-containing hormones - thyroxine (tetraiodothyronine, T4) and triiodothyronine (T3). The synthesis of these hormones requires thyroglobulin (TG), a precursor to T4 and T3, the only source of which is the thyroid gland, but whose secretion is controlled by thyroid-stimulating hormone (TSH). TSH, in turn, is synthesized by the pituitary gland (pituitary gland), which is located at the base of the brain. The main function of the pituitary gland is to maintain a constant concentration of thyroid hormones.

Thyroid hormones are found in the blood both in free form and bound to special carrier proteins. Only free forms of hormones exhibit biological activity. Thyroxine (T4) is one of the two main thyroid hormones.

Thyroxine secretion is regulated by a feedback system that the body uses to maintain stable levels of thyroid hormones in the blood.

If the level of thyroid hormones in the blood decreases, the pituitary gland begins to produce more thyroid-stimulating hormone (TSH), which stimulates the thyroid gland, and the secretion of T4 and T3 increases.

If the level of T3 and T4 in the blood, on the contrary, increases, then the pituitary gland reduces the secretion of TSH, and the thyroid gland, in turn, produces less T4 and T3.

If the thyroid gland does not produce enough T4 and T3 due to thyroid dysfunction or insufficient TSH levels, a person will experience symptoms of hypothyroidism: weight gain, dry skin, cold intolerance, irregular periods and fatigue.

If the thyroid gland produces too much T4 and T3, a person may experience symptoms associated with hyperthyroidism: rapid heart rate, anxiety, weight loss, trouble sleeping, tremors in the hands, and dry, irritated eyes. In some cases, exophthalmos (bulging eyes) is a characteristic symptom.

To engage the audience

Recommendation widget - a block with personalized content for your audience can be added to the Turbo page. This widget is already available to partners of the Advertising Network - it helps to increase the number of transitions to the site and the depth of views.

Improved automatic recommendation feed. The feed has proven to be an excellent tool for increasing user engagement, and we will continue to improve its effectiveness.

Working with comments - the ability to monitor the list of articles on which the latest comments appeared, as well as turn comments on and off separately for specific articles.

Possible complications of hyperthyroidism in the absence of timely treatment

Constantly high levels of thyroxine and triiodothyronine lead to exhaustion and weakening of the body. The most common complications:

• From the cardiovascular system: atrial fibrillation, which can result in cerebrovascular accidents (stroke), heart failure and associated deficiency of blood supply to all organs.
• From the musculoskeletal system - osteoporosis (demineralization of bone tissue). Occurs due to the fact that thyroid hormones suppress the process of incorporation of calcium from the blood into the bone. In osteoporosis, bones break from light impacts or falls from one's own height.
• From the side of the eyes. Due to inflammation of the eye muscles, vision clarity deteriorates. Bug-eyedness leads to the fact that the eyelids do not close completely, the conjunctiva dries out and becomes inflamed.
• Thyrotoxic crisis is a sharp increase in all symptoms: a jump in pulse, blood pressure, temperature, which may be accompanied by clouding of reason. This is a life-threatening condition; without medical attention, a person risks having a heart attack or stroke.
• If the causes of hyperthyroidism are benign neoplasms, in the absence of proper therapy they can contribute to the development of thyroid cancer.

Thyrotoxicosis has serious complications that lead to death or disability of the patient; to prevent this, it is important to contact an endocrinologist if alarming symptoms appear.