Thyroid-stimulating hormone (TSH) (Thyroid Stimulating Hormone, TSH, Serum)
The test determines the concentration of thyroid-stimulating hormone (TSH), produced by the pituitary gland and regulating thyroid function. TSH controls synthesis and secretion of thyroxine (T4) and triiodothyronine (T3), which govern metabolism, energy balance, and cardiovascular and nervous system function. Used to diagnose hypo- and hyperthyroidism and for thyroid disease monitoring. Recommended for weakness, fatigue, weight changes, heart rhythm disorders, mood swings, menstrual irregularities, and infertility.
What the test evaluates:
- TSH level in blood serum
- Functional state of the thyroid gland and hormonal balance regulation
Biomaterial: Venous blood (serum)
- Draw blood fasting
- Exclude intense physical activity and stress 24 hours before
Medications:
- If possible, do not take thyroid hormones 24-48 hours before (consult physician)
- Iodine preparations and biotin may affect results
- Inform physician of all medications taken
Recommended for:
- Thyroid gland diseases
- Hormonal imbalance symptoms
- Menstrual cycle disorders and pregnancy planning
- Heart rhythm disorders
Elevated TSH: may indicate hypothyroidism or compensatory response to reduced thyroid hormone levels (T4/T3)
Reduced TSH: may indicate hyperthyroidism or pituitary function suppression
Note: Endocrinologist consultation required for accurate interpretation and treatment prescription.
