Blood collection, Laboratory testing

Practically this means blood collection. Usually, it is required on day 3 and 20-21 of the cycle. Besides the general blood test different hormonal levels are checked.

It is critical to establish the serum level of the hormone which stimulates ovulation (follicle stimulating hormone, FSH). In case of some diseases which lead to infertility, it is also important to establish the so-called luteinizing hormone (LH) which is responsible for creating the corpus luteum. Furthermore, measuring the ratio of the two above mentioned hormones is fundamental.  Establishing the serum level of the female hormone produced by the ovary, the so-called estrogen (E2) helps choosing the drugs which would effectively stimulate the ovary. Assessing the serum level of the hormone called prolactin which is responsible for lactation and the control of the thyroid function before starting any therapy has a similar importance.

During the second part of the cycle, the hormone secreted by the corpus luteum (progesterone) makes the uterine lining suitable for fixing the fertilized egg, and therefore in cases with low progesterone levels repeated abortion can occur.

In many women with hormonal disorders and with lack of ovulation various chromosomal differences can be found in the background.

In addition to blood testing measuring basal body temperature is a useful tool in the assessment of hormonal changes. This is a very simple test that can be done by women at home by themselves at home. As basal body temperature rises after ovulation, the test can provide important information regarding the occurrence of ovulation.

Besides hormonal examinations individuals suffering from different viral infections (hepatitis, HIV) can be detected by blood testing.

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