Where is peripheral blood drawn?

After a woman becomes pregnant, she needs to do various prenatal examinations, through which she can observe the growth and development of the fetus. Prenatal check-up includes many new items, such as B-ultrasound, routine blood test, Down syndrome screening, fetal monitoring, etc. Routine blood test and Down syndrome screening require blood tests, and peripheral blood will be drawn. So where does the peripheral blood of pregnant women come from? Where does the peripheral blood come from?

Where should peripheral blood be drawn during pregnancy?

Peripheral blood is the area outside the spinal nerves. When you are 15-20 weeks pregnant, you need to do Down syndrome screening, and peripheral blood will be extracted. Blood needs to be drawn from the vein in the elbow. Generally, about 4 tubes of blood need to be drawn for the examination.

What should I pay attention to after blood test during pregnancy?

1. Take a break before leaving

Many people go to the hospital and leave immediately after having their blood drawn, but this is actually very unsafe. Although many blood tests do not require a large amount of blood, you will feel dizzy after the blood is drawn, and you will easily faint if you do not rest properly. Therefore, after drawing blood, it is best to squat and rest for about ten minutes before going home.

2. If you feel dizzy, lie down for a while.

People with poor physical fitness are prone to dizziness, nausea and vomiting after having their blood drawn. Because they did not eat before the blood test, they will have hypoglycemia after the blood test, which is prone to dizziness and nausea. Therefore, they can lie down and rest for a while after the blood test, and then eat something high in sugar, such as red bean syrup, sugar cubes, etc., or drink glucose water.

3. Press lightly for more than five minutes

After drawing blood, there will be needle holes left on your hands. If the wound is not pressed gently, it will bleed. Therefore, after drawing blood, you must press it gently with a cotton ball for a while, and then discard the cotton ball after the wound stops bleeding.

Peripheral blood tests usually involve drawing blood from the vein at the elbow. It is also effective to use a disposable blood collection needle to prick the fingertips or earlobes for blood testing. Carry out inspection according to the regulations of the inspection items. Generally, blood can be collected from the fingertips for routine blood tests. However, tests such as biochemistry, hepatitis B virus, thyroxine, and bacterial culture require more blood strips and need to be drawn from the veins in the elbows. The blood vessels at this point are well exposed, and it is very easy to activate blood circulation by lightly pressing. The test for malaria parasites can be considered by collecting blood from the ear, which is usually collected when the patient has chills and fever, and needs to be retested immediately. Since infants have thin blood vessels, blood sampling from the hair or internal jugular vein may be considered. A certain amount of vein sample should be extracted to prevent test deviation.