Checking for endocrine disorders if it is the hormone six test, it is the test on the 2nd-4th day of menstrual bleeding, other tests can be done without the influence of menstrual cycle. The most common test for endocrine disorders is the endocrine six test, which checks estrogen, follicle-stimulating hormone, luteinizing hormone, androgen, prolactin, and progesterone, and the time for blood sampling is the 2nd-4th day of menstrual bleeding. There are also other tests, such as thyroid function tests, blood sugar and insulin, which are not affected by the menstrual cycle and can be checked on any day of the menstrual cycle. In addition, as there are many causes of endocrine disorders, besides blood tests, gynecological ultrasound and thyroid ultrasound may also be needed, and there is no special requirement for this time.