The effect of contraceptive pills on the study of prolactin levels - when to do the test?

You can test your prolactin levels before you start using birth control pills, in any phase of the cycle, with the interpretation of the results depending on which part of the cycle the measurement was made. It is known that in the follicular phase (the first part of the cycle) the concentration of prolactin is higher than in the luteal phase (the second part of the cycle, after ovulation), which is why the norms of prolactin concentration in the follicular phase are lower than the norms for tests carried out in the luteal phase. You can also perform the test while using the contraceptive pills, but the effect of contraceptive pills on the results of the test should be taken into account. It has been proven that birth control pills can slightly increase prolactin levels. Please remember to notify the doctor interpreting the result of the test in which phase of the cycle the tests were performed. In the case of determining the level of prolactin while taking contraceptive pills, it is also very important to inform the doctor about this fact. About how to prepare for a blood test, we suggest in the text: https://www.gdziepolek.pl/artykuly/jak-przygotowac-sie-do-badania-krwi