Irregular menstruation, what tests should be done?

Patient's question:

Hello, doctor, my menstrual cycle is irregular. It usually arrives on the 27th day of each month, but for the past three months, it has come on the 23rd day. I would like to ask what tests I need to undergo and what days you are working in the outpatient clinic. Thank you.

Doctor's answer:

Irregular menstruation examination includes:
① Ultrasound examination: Reflects the condition of the uterus, ovaries, and pelvic cavity;
② Cytological examination: Checks ovarian function and excludes malignant lesions;
③ Biopsy: Determines the nature of the lesion, commonly used for tumor diagnosis;
④ Endocrine testing: Currently, hormones secreted by the pituitary gonadotropin, prolactin, ovaries, thyroid, and adrenal cortex can be measured.

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