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October promotion! "Extended Thyroid Profile" from October 1-31, 2025
Iodine, selenium, zinc, and hormones - a comprehensive test for a complete picture of your thyroid health.
Three important tests have been added to the extended profile:
- Iodine
- Selenium
- Zinc
Composition of the extended profile:
- Iodine
- Selenium
- Zinc
- TSH (thyroid-stimulating hormone) ultrasensitive
- T4 (thyroxine) free
- Anti-TPO (antibodies to microsomal thyroid peroxidase)
- Anti-TG (antibodies to thyroglobulin)
Individual price: 33 140 KZT.
Promotional price: 20 500 KZT.
Iodine, selenium, and zinc are directly involved in the formation and activation of hormones.
If there is a deficiency, the thyroid gland stops functioning properly, and symptoms gradually increase:
- chronic fatigue;
- hair loss and brittle nails;
- dry skin;
- weight gain;
- irritability or apathy;
- menstrual cycle irregularities.
Iodine
A component of T4 and T3 molecules: without sufficient iodine, hormone synthesis is impaired. Iodine is involved in the development and functioning of the central nervous system, affects tissue growth, and supports normal thermoregulation and metabolism.
Symptoms of iodine deficiency:
- Weakened immune system
- Edema
- Menstrual cycle disorders
- Anemia
- Excess weight
- Decreased intellectual activity
Main dietary sources of iodine: sea fish and seafood, iodized salt, dairy products, fish oil, seaweed, meat.
Selenium
Participates in protecting cells from oxidative stress, immune function, metabolism, and the production of proteins and enzymes.
The thyroid gland produces T4 (thyroxine), a relatively inactive form of the hormone. In order for it to become T3 (triiodothyronine) and exert its effect, it needs to be converted by selenium.
Symptoms of selenium deficiency:
- Fatigue, feeling "sluggish," weakness, decreased endurance.
- Skin problems (dryness), hair becomes brittle and falls out more often.
- Increased autoimmune activity - growth of antibodies (AT-TPO, AT-TG).
- Slowed metabolism, weight gain.
Complications:
- Chronic hypothyroidis
- Worsening of autoimmune thyroid diseases.
Zinc
Helps keep your thyroid gland working right, supports your immune system, and keeps your energy levels up. Not getting enough zinc can mess with how your T3 and T4 hormones are made, weaken your immune system, cause hair loss, and slow down how fast wounds heal.
TSH
A hormone made in the pituitary gland. It acts as a "regulator" for the thyroid gland: if the level of thyroid hormones (T3, T4) drops, the pituitary gland signals "get to work" by increasing TSH; if there is an excess of hormones, the pituitary gland reduces TSH.
Increased TSH
When TSH is above normal, it is a sign that the thyroid gland is not responding sufficiently to pituitary stimuli. Causes:
- Hypothyroidism (decreased thyroid function)
- Inflammation (thyroiditis)
- Primary adrenal insufficiency
Decreased TSH
If TSH is decreased, it means that the pituitary gland "sees" that there are enough (or too many) thyroid hormones and reduces the stimulus:
- Hyperthyroidism (overactive thyroid gland)
- Pituitary suppression (secondary causes)
- Taking medications that affect the hormonal axle
- Physiological conditions (certain periods of pregnancy, stress, acute illnesses)
Free T4
The thyroid gland produces the hormone T4 (thyroxine). It exists in two forms in the blood:
- Total - "attached" to proteins and not yet active;
- Free - "active," which affects metabolism, energy, and organ function.
If free T4 is above normal
- This may indicate hyperthyroidism: accelerated metabolism, weight loss, rapid heartbeat, anxiety.
If free T4 is below normal
This is more often associated with hypothyroidism: weakness, drowsiness, weight gain, dry skin, hair loss.
Anti-TPO
Thyroid peroxidase (TPO) is an enzyme found in the thyroid gland. It is needed to convert iodine and thyroglobulin into the hormones T4 and T3.
Anti-TPO are antibodies that attack this enzyme. The body mistakenly begins to consider TPO as "foreign" and produces antibodies against it.
Anti-TG
Antibodies that attack thyroglobulin. The body mistakenly begins to produce antibodies against it.
An increase in antibodies to thyroglobulin can be observed in:
- chronic thyroiditis (including Hashimoto's thyroiditis);
- hypothyroidism of unknown origin;
- autoimmune lesions of the thyroid gland;
- tumor processes in the thyroid gland;
- Down syndrome.