Having a one-time sexual encounter can also lead to syphilis infection. Syphilis is a chronic and systemic sexually transmitted disease caused by infection with Treponema pallidum, which can be transmitted through sexual contact, mother-to-child transmission, or other specific situations.

Estradiol (E2) is mainly produced by ovarian follicles, corpus luteum and placenta during pregnancy.

The level of female sex hormones​ will undergo corresponding physiological changes with the menstrual cycle. Clinicians should pay attention to the periodic changes of sex hormones when interpreting the test results, and need to know which stage of the menstrual cycle that patient is in and judge the relationship with related diseases.

The six sex hormone test reagents are mainly used to evaluate the reproductive endocrine function of men and women, and have important clinical significance and reference value for the diagnosis of menstrual disorders, sexual dysfunction, infertility and other diseases.