1013. Total Testosterone (T total, serum)
Important information
*The biomaterial can be taken during the whole working day of the lab center
*For woman an operator specifies the day of the menstrual cycle or the gestational age
Description
Testosterone is the primary sex hormone involved in regulating the reproductive system in both men and women. Measuring its levels helps identify the causes of disorders of sexual development and the menstrual cycle, infertility, hirsutism, and erectile dysfunction in men. Testosterone demonstrates diurnal variation (with peak levels observed in the morning).
It is advisable to assess it together with sex hormone–binding globulin (SHBG) levels, calculate the free testosterone index, and evaluate other hormones in the reproductive panel.
When and who needs the test?
- Delayed sexual development or precocious puberty in boys.
- Reduced libido in men and women.
- Erectile dysfunction in men.
- Male and female infertility.
- Testicular tumor.
- Diseases of the hypothalamus or pituitary gland.
Biological material
- Venous blood
Preparing for a blood test
In order to exclude factors that may affect the test results, we recommend to follow the preparation rules:
- an important condition for laboratory tests is to take blood on an empty stomach.
- 6-12 hours before the test, you should avoid eating, drinking alcohol, smoking, and limit physical activity. Drinking...
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