Does endocrine blood test require fasting?

The endocrine system is an important part of the body. Although it cannot be seen by the naked eye, it is composed of several different hormones that interact with each other and are very important for maintaining the balance of the body. Therefore, when the endocrine system is out of balance, symptoms of acne will often appear on the skin. If we want to check whether our endocrine system is normal, we can do the blood test on an empty stomach to ensure the accuracy of the test.

The method for endocrine examination is to draw venous serum and conduct corresponding tests after collecting the samples. However, endocrine examination consists of six items, and it cannot be completed by collecting serum once, but requires repeated collection of samples. For example, the test for luteinizing hormone requires 3 to 4 samples to be drawn within an hour. Because there are six test items, each item has its own specific sample collection requirements. Among them, the prolactin test requires a fasting test, and the serum sampling must be completed around nine in the morning. From this point of view, you need to be on an empty stomach when conducting an endocrine examination. Of course, you can eat something to replenish your energy after the prolactin sampling is completed.

Blood test items for pregnant women: HCG blood test In order to detect the accuracy of pregnancy, doctors generally recommend doing a blood HCG early pregnancy test. "Quantitative" testing of HCG values ​​in 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%. In addition, for multiple pregnancies, ectopic pregnancies, abnormal fetal developmental retardation, hydatidiform mole, certain endocrine diseases or tumors, the blood HCG value can be combined with the clinical condition and other examination results, and a correct judgment can often be made through comprehensive analysis. The HCG blood test requires fasting.

Blood tests for pregnant women: Routine blood tests are mainly used to determine whether the pregnant mother has anemia. Mild anemia will not have much impact on the pregnant mother and delivery, but severe anemia may lead to adverse consequences such as premature birth and low birth weight.

Blood tests for pregnant women: Blood type test Blood is usually drawn in early pregnancy to check blood type. This is done to prevent neonatal hemolytic disease in a timely manner. The second is to prepare for blood transfusion. Once a pregnant woman has early miscarriage, ectopic pregnancy, placenta previa, placental abruption, or heavy vaginal bleeding during delivery, her life may be in danger due to excessive blood loss.

Blood test items for pregnant women: ORCH test and TOUCH test are what we often call the four virus items, mainly including rubella virus, cytomegalovirus, toxoplasmosis and herpes simplex virus. When pregnant women are infected with these viruses, they can cross the placental barrier and infect the fetus, which may cause serious congenital malformations or even miscarriage. Therefore, it is best to have this test done when you are preparing. The normal result is negative. If the test is positive, you should get treatment before getting pregnant. Take the test on an empty stomach.

Blood tests for pregnant women: Liver function test This is mainly to check whether the expectant mother has diseases such as hepatitis, because pregnancy will increase the burden on the liver. If the mother's liver function is abnormal, the ability to process toxic and waste substances will be reduced, causing poisoning of the mother and fetus. Second, it cannot produce the various proteins needed by the body, thus affecting the functions of other organs. Third, due to the lack of sufficient coagulation factors, heavy bleeding is very likely to occur during delivery, endangering the health of the mother. In addition, the liver has many other functions that can be abnormal and lead to corresponding lesions. Note that the examination requires fasting.

Blood test items for pregnant women: Down syndrome screening Down syndrome screening is a test to screen the possibility of the fetus suffering from Down syndrome. Generally, Down syndrome screening involves drawing two milliliters of blood from the pregnant woman, testing the alpha-fetoprotein, chorionic gonadotropin and free estriol in the serum, and then calculating the risk index of "Down syndrome child" based on the height, weight, age and gestational age of the pregnant woman. The best screening time is actually 15-20 weeks of pregnancy.

Blood test items for pregnant women: Gestational diabetes screening Gestational diabetes refers to diabetes that occurs or is discovered during pregnancy even though the patient did not have diabetes before pregnancy. Gestational diabetes can directly affect fetal development and increase the risk of macrosomia. Gestational diabetes may also increase the risk of various diseases such as fetal miscarriage, intrauterine growth retardation, malformations, macrosomia, low birth weight, etc., and may also easily cause a variety of neonatal complications, such as hyperbilirubinemia, respiratory distress syndrome, etc.

Therefore, doctors will recommend gestational diabetes screening at 24-28 weeks of pregnancy. It is best to eat a light diet the day before the sugar screening, do not eat after 8 pm, and do not eat fruits and drinks with high sugar content, so as not to affect the test results.