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7 papers reviewed

Hormone Testing & Cycle Monitoring

2024 · clinical commentary · 1 of 7

Day 21 Progesterone Test vs. NaPro Testing

NFP Physician · NFP Physician (Clinical Commentary)

NaPro-based cycle-timed hormone testing anchored to confirmed ovulation provides superior diagnostic accuracy vs standard day 21 testing. Progesterone swings ~130-fold across a cycle; testing at incorrect timing yields misleading results.

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2024 · comparative study · 2 of 7

Comparison of day-specific serum LH, estradiol, and progesterone with Mira Monitor urinary LH, estrone-3-glucuronide, and pregnanediol-3-glucuronide levels in ovulatory cycles

Various · Diagnostics (MDPI)

Comparison of serum vs urinary hormone monitoring methods. Urinary metabolites provide practical at-home tracking that correlates with serum values for ovulation detection.

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2023 · review · 3 of 7

Prediction of ovulation: new insight into an old challenge

Various · Frontiers in Endocrinology

LH surge and estrogen rise are best hormonal markers of the fertile window. Circulating LH alone cannot reliably predict ovulation. Multi-marker approaches combining mucus, LH, and estrogen improve accuracy.

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2025 · review · 4 of 7

Anti-Mullerian Hormone concentrations in women of different reproductive age and the chances of IVF outcome: a paradigm shift is needed

Various · Reproductive Sciences

Women with low AMH can achieve unexpectedly high oocyte numbers and pregnancy rates. AMH alone should not define fertility potential. Small AMH differences (0.9 vs 1.1 ng/mL) put women in different categories but reflect minimal real difference.

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2021 · systematic review / meta-analysis · 5 of 7

The value of anti-Mullerian hormone in the prediction of spontaneous pregnancy: a systematic review and meta-analysis

Various · Reproductive Sciences

AMH has inconsistent predictive value for natural pregnancy. Low AMH may be a risk factor for reduced natural pregnancy rate in some studies, but others report opposite results. Does not indicate egg quality.

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2020 · review · 6 of 7

Anti-Mullerian hormone and ovarian reserve: update on assessing ovarian function

Various · Journal of Clinical Endocrinology & Metabolism

AMH is best marker for ovarian reserve but not fertility. Normal levels not yet standardized. Little known about endogenous/exogenous factors influencing AMH. Should be interpreted in context with other markers.

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2024 · comparative study · 7 of 7

Evaluation of ovulation by urinary LH surge kits versus transvaginal sonography

Various · Indian Journal of Obstetrics and Gynecology Research

Urine LH tests: sensitivity 1.00, specificity 0.25, accuracy 0.97. Ultrasound can detect LUFS that hormonal testing misses. LH testing is less expensive and non-invasive but lacks specificity.

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A paper's presence documents the evidence reviewed; it does not mean Filia endorses every intervention or conclusion.