Do gynecological endocrine examinations require fasting

gynecological endocrine examination usually requires fasting. Some hormone testing items such as insulin, blood glucose, growth hormone, etc. are sensitive to diet, and fasting can reduce interference. But the specific requirements need to be determined based on the examination items. It is recommended to confirm the requirements with the doctor in advance. Gynecological endocrine examination involves multiple hormone level tests, and different items have different requirements for fasting. The six types of sex hormones include follicle stimulating hormone, luteinizing hormone, estradiol, progesterone, testosterone, and prolactin. Among them, prolactin testing requires fasting for 8-12 hours and avoiding vigorous exercise, while the other five usually do not require strict fasting. Thyroid function tests include indicators such as thyroid stimulating hormone and free thyroxine, and generally do not require fasting. However, some hospitals may recommend fasting blood collection. Anti Mullerian hormone reflects ovarian reserve function, and the test results are not affected by diet. Blood glucose and insulin release tests must be conducted on an empty stomach for at least 8 hours, otherwise it may affect the accuracy of glucose metabolism assessment. Cortisol and adrenocorticotropic hormone have circadian rhythms and usually require fasting blood collection at 8am in the morning.

Three days before the examination, it is necessary to maintain a regular daily routine and avoid staying up late and engaging in strenuous exercise. Drinking alcohol is prohibited 24 hours before blood collection. On the morning of the day of examination, it is forbidden to drink sugary drinks, and a small amount of plain water can be consumed. Wearing loose clothing facilitates blood collection, maintains emotional stability, and avoids stress reactions interfering with results. If re examination is required, it is recommended to choose the same time period, as different physiological cycles may affect the sex hormone detection values. Long term use of contraceptive pills or hormone drugs should inform the doctor in advance.