Hormonal Abnormalities
Hormonal abnormalities are hormone problems that disrupt egg growth, ovulation, or early pregnancy. Clinicians most often test FSH, LH, estradiol, progesterone, prolactin, TSH, and AMH. These hormones signal one another in a linked network. A problem in one hormone often spreads to the others. For this reason, a single test taken without regard to the cycle day can miss the full picture.1
FSH and LH control egg growth and trigger ovulation. An FSH level that stays high points to a lower ovarian reserve, the number of eggs that remain. A high LH, or a high LH-to-FSH ratio, is common in polyendocrine metabolic ovarian syndrome (PMOS), formerly polycystic ovary syndrome (PCOS). It is not required for the diagnosis. Estradiol builds the endometrium, the lining of the uterus. It does this in the first half of the cycle. Progesterone prepares that lining in the second half. In luteal phase deficiency, the body makes too little progesterone after ovulation. The embryo may then fail to implant, even though ovulation took place.
A TSH level can sit outside the best range for conception. At the same time, it can sit inside the lab's normal range. This pattern is linked to lower fertility and a higher risk of miscarriage.2 High prolactin (hyperprolactinemia) disrupts the brain signals that drive the ovaries. It dampens the pulses of LH and FSH. It can stop ovulation completely.3 AMH reflects how many eggs are left to grow. Low AMH points to diminished ovarian reserve (DOR). A very low level before age 40 may signal premature ovarian insufficiency (POI). Some medicines change AMH results. These include hormonal contraceptives (suppressive medications) and GnRH agonists. Current prescriptions matter when a clinician reads a result.4
RRM clinicians view hormonal abnormalities as signs of an underlying condition. An out-of-range value starts the search for the cause. The cause may be hypothyroidism, hyperprolactinemia, an ovulation problem, or a metabolic problem. Finding the cause allows directed evaluation and targeted support. It avoids simply bypassing the system that is failing.
Cited in this entry
- The importance of fertility awareness in the assessment of a woman's health: a review. https://rrmacademy.org/library/the-importance-of-fertility-awareness-in-the-assessment-of-a-womans-health-a-rev-recmmebbcvxamvfwq/
- Orouji Jokar T et al. Higher TSH Levels Within the Normal Range Are Associated With Unexplained Infertility. J Clin Endocrinol Metab. 2017. https://rrmacademy.org/library/higher-tsh-levels-within-the-normal-range-are-associated-with-unexplained-infert-recfswcfajl43swbh/
- Diagnosis and treatment of hyperprolactinemia: an Endocrine Society clinical practice guideline. https://pubmed.ncbi.nlm.nih.gov/21296991/
- Yin WW, Huang CC, Chen YR, Yu DQ, Jin M, Feng C. The effect of medication on serum anti-müllerian hormone (AMH) levels in women of reproductive age: a meta-analysis. BMC Endocrine Disorders. 2022. https://pubmed.ncbi.nlm.nih.gov/35698127/
This content is for educational purposes only and does not constitute medical advice. Consult an RRM clinician or healthcare provider for guidance specific to your situation.
