If the cycle is regular, there is no point in doing a test before the start of the delay. With each passing day, the reliability of the results will increase. However, it is better not to wait weeks or even months. In the first weeks of pregnancy, it will be easier for the doctor to help the mother and her unborn child avoid dangers.
If the menstrual periods are unstable, you will have to wait a period of time equivalent to the longest cycle of the year. For example, if it lasted 34 days, then it is better to count the same number of days from the beginning of the last menstruation, and then only buy a test. Do you know the day of ovulation? 2 weeks after it, it will already be possible to find out about your situation.
The situation largely depends on the type of test. For example, a jet with a mark of 10 mIU / ml is able to determine a successful conception even 3 days before the expected menstruation. And devices labeled 25 mIU/mL will be useless until the delay begins.
HCG is a hormone whose presence indicates pregnancy. It becomes noticeable in the blood faster and better than in the urine. Therefore, a laboratory test shows a result earlier than most pharmacy ones.
Is the expected day of conception known? You can donate blood for analysis within a week after this date. If not, then the first day of the delay will be the best reason to go to the antenatal clinic.
If the test results are indeterminate, the gynecologist will recommend that you donate blood again after a few days. Want to know the answer for sure and the first time? Then it is advisable to donate blood for hCG approximately on the 3rd day of the delay. At this time, his concentration will become clearly noticeable.