Too nervous, blood test hcg is inaccurate

Generally, when you go to the hospital for a physical examination, in order to obtain more accurate results, there are usually some common questions before the examination. So what should we pay attention to when doing blood hcg test?

1. Check whether you have maintained stable sleep quality before

One week before taking a blood hcg test, female friends should pay attention to developing an effective work and rest schedule, ensure adequate sleep, and avoid excessive fatigue.

2. Blood hcg test does not require fasting

Because the content of hcg is not affected by meals, there is no need to be on an empty stomach or hold your urine. It is recommended to check it in the morning.

3. Wear looser clothes

When you go to the hospital for a check-up, you can bring some books with you to pass the time waiting in a long line. Your clothes should be loose. If you are wearing too much or too tight, it is best to slip off the sleeve on the side where blood tests are required to be done to prevent your clothes from compressing your blood vessels or causing some inconvenience if the time is too long.

4. Regulate emotions and maintain calmness

Before doing a blood hcg test, female friends should pay attention to adjusting their mentality and avoid being too nervous. Stress and anxiety will affect the quality of the inspection.

5. Prevent the influence of drugs

Three days before the hCG test, try not to take medicine privately. Medicines such as vitamins will produce chemical changes in the blood, which will change the metabolism of some substances and affect the test results.

When is the best time to check blood hcg?

Blood hcg test is not only used to identify pregnancy, but also has different best times for different testing purposes.

1. The best time to determine pregnancy by blood hcg test

Generally speaking, the best time to check blood hcg is 8 to 10 days after sexual intercourse. Because the blood contains a higher hcg value at this time, the test is more accurate.

2. The best time to identify abnormal pregnancy conditions

After a woman becomes pregnant, an increase in the β-hcg value in the blood can be measured from the 9th to 11th day, and then the β-hcg value can double every two days. If the test finds that the increase rate is slow for two consecutive times, it may be caused by factors such as ectopic pregnancy, test tube embryo abnormalities, or intrauterine language development delay.

If the abnormal pregnancy is a hydatidiform mole, the hcg concentration in the blood cells is much higher than the corresponding monthly value during a normal pregnancy. Therefore, this difference can be used as an auxiliary diagnosis of hydatidiform mole, usually in the first 3 months of pregnancy.

3. The best time to identify Down syndrome screening

Down syndrome screening comprehensively calculates the risk of the fetus suffering from Down syndrome by testing the levels of AFP and β-hcg in venous blood. The best time to do this test is between 15 and 20 weeks of pregnancy.

4. The best time to check for miscarriage with blood hcg

Since the fetus has been delivered, the woman's blood hcg test should return to normal 4 days after giving birth or 13 days after an abortion. If this condition is not met, the following possibilities should be considered: incomplete abortion, there may be residual test tube embryo tissue in the woman's body after abortion; there may be residual embryos and fetal membranes in the woman's body after giving birth, or the woman herself may suffer from trophoblastic disease, etc.