The health of the human endocrine system depends on a large number of factors. An important role is played by thyroid-stimulating hormone, especially when it comes to the fairer sex. Its blood level changes with age, but the TSH rate in women depends on many factors, including pregnancy and medication.

What are the changes in thyrotropin associated with?

TSH levels change during pregnancy, in each trimester they will have their own values.

Other reasons:

1. Disorders of the thyroid gland.
2. Tumor diseases of the pituitary gland.
3. Violation of the adrenal glands.
4. Excessive intake of iodine.
5. Mental disorders.

In this case, an increase in thyroid-stimulating hormone is more often observed. Certain fluctuations can be diagnosed in perfectly healthy women, therefore, with a slight increase, it is necessary to donate blood for analysis again.

If a woman’s body contains a large amount of thyroid-stimulating hormone, then this can cause infertility, lack of menstruation.

The TSH level can not only increase, but also decrease, and this phenomenon indicates the presence of the following disorders in the body:

• stress, excessive nervous tension of a prolonged nature, depression;
• fasting or prolonged restriction of the amount of food consumed;
• taking certain medications.

The result of the TSH study is relatively stable. If the thyroid gland is working properly, then within a month the hormone levels in the body do not change significantly. But they can be influenced by the woman’s age.

It is enough to donate blood in order to find out the indicators of thyroid-stimulating hormone in the body, but the norms have permissible fluctuations. A more accurate understanding of the problem will help the consultation of an endocrinologist.

Age-related changes in thyrotropin

If you differentiate the indicators by age, you will notice the following changes:

1. 30 years – fluctuations in the range from 0.40 to 4.0 mU / l.
2. For conception, thyroid-stimulating hormone must be different, the level does not exceed 2.5 mU / l.
3. In women aged 40 years – fluctuations in the range from 0.40 to 4.0 mU / l.
4. At the age of 50, the indicators may be increased relative to the norm, but, given the individual characteristics of the patient’s body, such a result can be considered the norm.
5. After 60 years, the indicators change and the level boundaries become blurred, ambiguous, therefore, when passing the analysis, an endocrinologist’s consultation is necessary. The limits at this age: lower – 1.0 mU / l, upper – 10 mU / l.

The work of the thyroid gland is regulated by more than one hormone, it is necessary to take into account the level of T3 and T4.

Thyroid hormones are closely related to each other, therefore, for a complete diagnosis, it is necessary to undergo a number of studies that will help to obtain a more complete result.

It is generally accepted that the level of TSH should be minimal. The lower limit is 3.5–4.0 in μIU per ml. But such an analysis result may indicate a hidden course of hypothyroidism.

During pregnancy, blood can be donated more often in order to avoid serious complications and diagnose pathology at an early stage of development.

Preparation for research

A free blood test for TSH requires compliance with the following rules:

• it is better to donate blood in the morning from 8 to 10;
• you do not need to eat before taking the test;
• it is not recommended to go in for sports a day before blood sampling;
• the psychological state of a person can also affect the results;
• stop taking medications per day that may affect the result of the study.

If there is a suspicion of a dysfunction of the thyroid gland, then doctors recommend donating blood for TSH sensitive. It is he who acts on the thyroid gland and stimulates its activity.

What is AT to RTTG and is it necessary to take this test?

Autoimmune antibodies to TSH receptors are a marker of diffuse toxic goiter. They are able to affect thyroid-stimulating hormone and disrupt the activity of the thyroid gland, increasing the concentration of T3 and T4 in the body. When diagnosing diffuse-toxic goiter, antibodies are present in the blood in 85 % of patients. 

Why exactly antibodies appear in human blood, scientists cannot say for sure, only a genetic predisposition to the development of the disease has been revealed.

What rate of thyroid-stimulating hormone is considered acceptable and which is not, only a doctor can say. The indicators have rather blurred boundaries, and it all depends on the individual characteristics of the female body.