Blood test in early pregnancy did not detect

The first few days of pregnancy are the early stages of pregnancy. At this time, you need to pay more attention and do a comprehensive check-up in time. Generally, not all blood tests can detect early pregnancy in the early stages of pregnancy. Some need to be checked through early pregnancy test strips, B-ultrasound examinations and related tests to get the results. The accuracy of this test can be as high as 99%. Not all early pregnancies can be detected through blood tests.

How many days does it take to detect pregnancy?

Generally speaking, the test can be performed 7-10 days after intercourse. Pregnancy can be tested by testing morning urine with early pregnancy test strips or pregnancy test sticks. The longer the time after intercourse, the more accurate the test. In short, you can test whether you are pregnant one week at the earliest and three weeks at the latest after having sex.

Early pregnancy test

There are many ways to test for early pregnancy, and the testing time for different methods is different. The accuracy of different detection methods is also different. The best time for an early pregnancy test depends on the method used. The best time for an early pregnancy test is one week after your period is overdue. The most common methods for detecting early pregnancy include pregnancy test strips, B-ultrasound, and blood HCG testing.

8 days after intercourse - blood HCG test

99% accuracy

Under normal circumstances, a blood hCG test can be done 8-10 days after intercourse to confirm whether you are pregnant. "Quantitative" testing of HCG values ​​in the blood can respond to pregnancy more sensitively and accurately than the ordinary "qualitative" testing of urine with early pregnancy test strips, with an accuracy rate of over 99%.

Two weeks after intercourse - early pregnancy test

Accuracy: 55%-90%

Early pregnancy test strips can usually detect pregnancy two weeks after intercourse, and the urine tested should preferably be morning urine. The result will be more accurate if the test is delayed 5-10 days after the menstruation.

Use the early pregnancy test to check whether you are pregnant. If the test shows two red lines, it means you are pregnant, otherwise you are not pregnant.

After 5 weeks of pregnancy - B-ultrasound examination

99% accuracy

The main purpose of early pregnancy ultrasound examination is to confirm intrauterine pregnancy, exclude ectopic pregnancy and trophoblastic disease, estimate gestational age, and exclude pelvic masses or uterine abnormalities.

Generally, a gestational sac can be seen in the uterine cavity 35 days after menstruation; at 6 weeks of pregnancy, the embryo and primitive heart tube beating can be seen.

How many days of delayed menstruation is considered pregnancy?

Generally speaking, healthy women of childbearing age with a history of sexual life usually have regular menstrual cycles. Once menstruation is delayed, they should consider whether they are pregnant. If menstruation is delayed for more than 10 days, the possibility of pregnancy should be highly suspected. Delayed menstruation is the earliest sign of pregnancy, but it is not a specific symptom of pregnancy. Other reasons for delayed menstruation include gynecological diseases, mental factors, excessive weight loss, drug effects, etc. It does not mean that you are pregnant as long as your menstruation is delayed.

Pregnancy will cause your menstrual period to stop, but stopping your period does not necessarily mean you are pregnant. If you want to confirm whether you are pregnant during menopause, it is recommended that you go to the hospital for a detailed examination.