What are normal testosterone levels in adults and children?

Testosterone is a steroid hormone, also called male hormone. For adults, if the secretion of testosterone is unbalanced, it often induces some reproductive system diseases. For example, if there is a disorder in the testosterone level of women, it often leads to infertility. So when infertility occurs, go to the hospital for examination, and the hormone level in this area will often be checked.

1. Normal testosterone levels in adults:

(1) Male: 14-25.4 nmol/L;

(2) Female: 1.3-2.8nmol/L.

2. Children:

(1) Male: <8.8nmol/L;

(2) Female: <0.7nmol/L

3. Normal testosterone level during pregnancy: 2.7～5.3nmol/L

The ovarian follicles can secrete testosterone, accounting for about 1/4; the adrenal cortex also secretes 1/4 of the testosterone, and about 1/2 of the testosterone is converted from extraglandular androstenedione.

Testosterone is measured by radioimmunoassay. The normal value of testosterone in women is 0.7-3.1umol/L, and the normal value of testosterone in men is 9.0-45.8umol/L.

According to statistics, the amount of testosterone secreted by adult males is 20 times that of adult females. Testosterone is also an important reason why boys are active, competitive, adventurous, and eager to become the strongest, bravest, and strongest man. It plays a vital role in the growth and development of boys.

In addition, the reasons for the increase of androgen in women's blood are:

1. Excessive secretion of ovarian or adrenal cortex.

2. Testosterone and estradiol binding globulin decrease, resulting in an increase in free testosterone.

3. Peripheral conversion, such as pregnenolone can be converted into testosterone through metabolism.