How many weeks of pregnancy can be detected

After pregnancy, the first phenomenon that occurs is amenorrhea. If a woman suspects that she is pregnant, she can check it with an early pregnancy test. Under normal circumstances, you can use the early pregnancy test on the seventh day of pregnancy, but the test at this time is not necessarily accurate. It is best to use the early pregnancy test after a few days. You can also go to the hospital for a blood test. This method is more accurate. Let's take a look at this aspect.

How many weeks of pregnancy can be detected

Urine test refers to the use of early pregnancy test strips to detect the amount of human chorionic gonadotropin in urine, but it can only be detected when the amount of human chorionic gonadotropin reaches a certain level. Generally speaking, if the menstruation is normal, you can use the early pregnancy test strips to check one week after the menstrual cycle is delayed; if you check the HCG content in the blood, you can usually go to the hospital for examination 2 weeks after having sex. The main clinical manifestations of ectopic pregnancy are amenorrhea, abdominal pain, and vaginal bleeding.

However, threatened abortion is often accompanied by the above symptoms, so a comprehensive judgment is needed based on ultrasound, blood HCG, and progesterone results. If hcg>1500mIU/ml at 5 weeks of pregnancy, but no gestational sac can be seen in the uterine cavity, ectopic pregnancy is highly suspected. In general, if you drop urine into the detection hole on the early pregnancy test paper and a colored band appears in the control area of ​​the test paper, it means that there is no pregnancy. On the contrary, if a clear colored band appears in the detection area, it means positive, indicating pregnancy.

Because different test strips have different detection methods, you should follow the instructions. It is best for women to use the first urine test after getting up in the morning. The earliest use period of the pregnancy test strip is 14 days after conception, that is, 14 days after sexual intercourse, and it is best to use it one week after missed menstruation.

Urine pregnancy test

Early pregnancy tests usually only require urine testing. After the fertilized egg is implanted in the uterus, a new chorionic gonadotropin is produced in the pregnant woman's body, which helps maintain the pregnancy. This hormone can be detected in urine about 10 days after conception. Urine pregnancy test: When checking for early pregnancy, be sure to use morning urine, because morning urine is concentrated and has higher hormone levels. In order to increase the positive rate of early pregnancy tests, you should try to reduce your water intake the night before.

It is best to get a container from the laboratory in advance for the early pregnancy test, because it contains preservatives and the urine is not easy to deteriorate. If conditions permit, any wide-mouth bottle can be used, but it needs to be washed and boiled for sterilization or rinsed with boiling water. After collecting about 10 ml of morning urine, send it to the laboratory for early pregnancy test immediately. If the time is delayed too long, it may affect the accuracy of the test. This should be paid more attention to in the summer.

[The advent of early pregnancy test strips has brought great convenience to the diagnosis of early pregnancy. On the seventh day of a woman's pregnancy, a specific hormone, human chorionic gonadotropin (HCG for short), can be detected in her urine. Its function is to help maintain pregnancy. In general, drop urine into the detection hole on the test paper. If a colored band appears in the control area of ​​the test paper (some test papers appear red, some test papers appear blue), it means that there is no pregnancy. On the contrary, if a clear colored band appears in the test area, it means positive, indicating that pregnancy has occurred.

This test has the advantages of being rapid, convenient, sensitive and highly specific, and can avoid cross-reactions caused by other glycoprotein hormones with similar structures to HCG. It is worth noting that if women of childbearing age experience amenorrhea, they cannot rely solely on a single pregnancy test to determine whether they are pregnant. The most reliable thing is to go to the hospital for a comprehensive examination in time, especially for those with weak positive results, so that measures can be taken as soon as possible.