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  • Title: Mean versus individual hormonal profiles in the menstrual cycle.
    Author: Alliende ME.
    Journal: Fertil Steril; 2002 Jul; 78(1):90-5. PubMed ID: 12095496.
    Abstract:
    OBJECTIVE: To evaluate hormonal profiles of normal menstrual cycles. DESIGN: Prospective, descriptive study of a case series. SETTING: University-based natural family planning center. PATIENT(S): Twenty-five natural family planning users for three or more cycles (n = 78). These women were healthy, contraception-free, parous, with regular ovulatory cycles. INTERVENTION(S): Immunoassays for estrone glucuronide, LH, and pregnanediol glucuronide were done in daily timed and measured samples of early morning urine. MAIN OUTCOME MEASURE(S): Estrone glucuronide, LH, and pregnanediol glucuronide levels were measured during the menstrual cycle. RESULT(S): All cycles showed an ovulatory pattern configuring classic hormonal mean curves. Most (77%) differed from the mean curve pattern. All had estrone glucuronide peaks, LH peaks, and pregnanediol glucuronide increases. Estrone glucuronide and LH peaks were not always clear; some lasted more than 1 day (long peak: estrone glucuronide 19%, LH 9%) or fluctuated (double peak: estrone glucuronide 4%, LH 6%; small LH peak: 19%). There were also prepeak estrone glucuronide surges, and pre- and postpeak LH surges. Pregnanediol glucuronide increased more clearly (6% fluctuated 1 day). Some women had repeated cycles with long estrone glucuronide peaks (16%) and fluctuations in LH surge (44%). CONCLUSION(S): Normal menstrual cycle hormonal profiles generally differ from mean curves, which are usually considered standard.
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