Low progesterone is expected at the start of the menstrual cycle, but after ovulation we interpret its value differently. When preparing for IVF, details like this matter: properly selected hormone tests, done at the right time, provide information about ovarian function and help us plan treatment.
At Adella Clinic we review laboratory results together with the ultrasound scan and medical history. This allows us to judge what response to expect from the ovaries during stimulation, whether there is a condition that needs additional attention, and how to tailor the next steps to your health.
What does “full hormone testing” mean?
The phrase full hormone testing is often used for different laboratory packages, but there is no single set of markers suitable for every woman. A regular cycle, ovulation disorders and preparation for IVF raise different diagnostic questions.
When we order hormone tests for women, we start with the reason for testing. When preparing for stimulation, we assess the expected ovarian response. With irregular periods, we look for an explanation for the changes in the cycle. Symptoms or an already diagnosed endocrine disorder may call for additional markers.
Useful diagnostics are detailed enough to guide treatment. Expanding the list makes sense when a new test can answer a specific medical question.
Which types of hormone tests are discussed before IVF?
Different types of hormone tests show separate aspects of reproductive function. Some give an indication of ovarian reserve, others help assess ovulation or point to an endocrine disorder.
AMH and ovarian reserve
Anti-Müllerian hormone, known as AMH, is produced by the small developing follicles in the ovaries. Together with the ultrasound count of antral follicles, it helps us estimate the expected response to stimulation. Antral follicles are small structures that can be seen on an ultrasound scan.
These markers are part of the ovarian reserve assessment. They mainly provide information about quantity and do not directly measure egg quality. A lower AMH may point to fewer eggs being retrieved during stimulation, without on its own determining the chance of pregnancy.
FSH, LH and oestradiol
Follicle-stimulating hormone, or FSH, is involved in follicle development. Oestradiol is produced mainly by the ovaries and its levels change throughout the cycle. When we assess their baseline levels, we look at both markers together, because the interaction between them matters for interpretation.
Luteinising hormone, known as LH, is involved in triggering ovulation. Testing it can be useful in certain cycle disorders or as part of treatment monitoring. Its value on its own is not enough to make a diagnosis.
Progesterone
Progesterone rises after ovulation and helps prepare the uterine lining for pregnancy. When needed, testing it can support evidence that ovulation has occurred.
The timing of the sample is particularly important. A single value does not give a complete assessment of function throughout the second half of the cycle.
Thyroid function, prolactin and additional markers
If there are signs of a thyroid or ovulation disorder, TSH and, depending on the case, free thyroxine, referred to as FT4, may be ordered.
Prolactin is tested for specific indications, such as absent or infrequent periods and a milk-like discharge from the breasts outside of breastfeeding. With symptoms pointing to raised androgens, testosterone and other related markers may be needed. These tests complement the assessment when there is a medical reason for them.
When are hormone tests done?
The answer to when hormone tests are done depends on the specific hormone and the purpose of the test. Some markers are assessed in a particular phase of the cycle, while others do not require such precise timing.
When FSH and oestradiol are ordered as baseline markers, they are usually tested together between the second and fourth day of the menstrual cycle. AMH can be tested on any day, with the medication you are taking taken into account when interpreting it.
Progesterone to confirm ovulation is usually tested about a week before the next expected period. Day 21 is a suitable guide only for some women. With a longer or irregular cycle, a different time, determined through monitoring, may be needed.
These timings apply to assessment in a natural menstrual cycle. During stimulation or preparation for embryo transfer, hormone tests may be ordered on other days, according to the treatment protocol.
How do the results guide IVF treatment?
The results help us choose the stimulation protocol and the way of monitoring. If a weaker response is expected, we discuss realistically how many eggs might be retrieved. If there are signs of a stronger response, we plan an approach that takes into account the risk of an excessive reaction to the medication.
If an endocrine disorder is found, we assess whether treatment or an additional consultation is needed before the next stage. The decision is based on the clinical significance of the finding, not only on the deviation flagged on the lab report.
Reference ranges can differ between laboratories. For a correct comparison, the method used, the units of measurement and the phase of the cycle are important. Sometimes repeating a test under clarified conditions gives more useful information than adding new markers.
Precise diagnostics support safe and well-founded planning. They cannot on their own guarantee a successful outcome, because pregnancy also depends on other factors.
Why are hormone tests only part of the assessment?
Even full hormone testing cannot show all the causes of difficulty conceiving. It does not directly assess the uterine cavity, the condition of the fallopian tubes or the partner's reproductive function.
That is why the diagnosis of female infertility includes a discussion of medical history, a gynaecological examination and an ultrasound. Additional tests are ordered depending on the findings, and when the partner's sperm is used, his assessment is part of the overall plan.
At Adella Clinic we will explain which markers are needed, when they should be tested and how the results will affect treatment. If you already have test results, you can bring them to the consultation together with information about the day of your cycle and any medication you take. This helps us use the available data and judge what else is needed.
Frequently asked questions
Do hormone tests need to be done on an empty stomach?
Not all hormone tests require fasting. Preparation depends on the specific marker and the other tests taken at the same time. Follow the instructions of your doctor and the laboratory regarding eating, the time of sampling and taking medication.
Can contraceptive pills affect the results?
Hormonal contraception can temporarily affect some markers, including those for ovarian reserve. That is why it is important for us to know which product you take and since when. If stopping it or repeating a test is necessary, this is agreed with the doctor, without changing your intake on your own.
Do I need a progesterone test if my cycle is regular?
With regular menstrual cycles and no other indicative symptoms, routine laboratory confirmation of ovulation is usually not necessary. Progesterone may be ordered for a specific diagnostic question or as part of treatment monitoring.
Can there be difficulty conceiving with normal hormone results?
Yes. Hormone markers describe only part of reproductive function. That is why normal values are considered together with the ultrasound assessment, other tests and the partner's results.
