Does ovulation test paper show weak yang before menstruation comes

If the patient's menstrual cycle is not regular, the luteinizing hormone in the body will gradually decrease before menstruation, and the ovulation test paper will show a weak positive reaction. If the patient's menstrual cycle is irregular, the prediction of menstrual time is inaccurate, and it is impossible to calculate the ovulation period. The luteinizing hormone in the body may be very small, or it may be more. At this time, the ovulation test paper will not show a weak positive

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