Blood Hormone Testing

(AMH, LH, FSH, Oestradiol & Prolactin)

All the female hormones involved in egg growth and release can be measured. The time of the menstrual cycle is important when measuring FSH, LH and Oestradiol.

  1. AMH (anti-mullerian homone) is the most accurate test to estimate how many eggs a woman has in her ovaries. It can be done at any point in the menstrual cycle and is also not affected by hormone or drug medications.
  2.  FSH, LH and Oestradiol levels are performed between days two and five of your menstrual cycle. This test is an estimate of the number of eggs in the ovary and also the balance between the hormones. It can pick up a variety of medical conditions, such as low FSH and LH (hypogonadotrophic hypogonadism), PCOS and premature ovarian failure. Because the levels of these hormones fluctuate during the menstrual cycle, this test is not very helpful when done after day five of the menstrual cycle.
  3. Prolactin hormone is usually produced in large amounts during breast-feeding. It can become high in other situations and may then cause problems for egg release. It can be measured at any point during the menstrual cycle.

Ruling out medical conditions that can affect fertility

  • Thyroid disease (TSH levels). This screening thyroid test is done to check whether these hormones, which affect the menstrual cycle, are present at normal levels.
  • Diabetes screening. Blood testing to screen for diabetes may be suggested. Women with un-diagnosed diabetes are less likely to get pregnant, and are also at increased risk for miscarriage and abnormal babies.