What blood value can rule out ectopic pregnancy? See the experts' answers

Ectopic pregnancy is difficult to be detected in the earliest stage because the symptoms are not obvious, but it can still be scientifically determined through blood lipid tests. For example, in a normal pregnancy, a woman's HCG monitoring value will be much higher, but this will not be the case with an ectopic pregnancy.

1. How much hcg is an ectopic pregnancy

The hCG value of ectopic pregnancy is the same as that of intrauterine pregnancy, because only the location of the fertilized egg implantation is different, and the early development of the fertilized egg is the same, so the HCG value in the blood and urine is the same.

The hcg value of ectopic pregnancy can be used to judge that it is a pregnancy reaction, that is, early pregnancy, but the hcg value cannot be used as a basis for the diagnosis of ectopic pregnancy. The diagnosis of ectopic pregnancy depends on the results of further examinations.

What is the range of hcg values ​​for ectopic pregnancy? Diagnostic method: First, use B-ultrasound examination to determine the location of the gestational sac and check whether it is an ectopic pregnancy; second, test the hCG value again after two days. Under normal pregnancy conditions, the hCG value will double every two days, that is, after two days, the hCG value should be in the range of 500-1000, indicating that the fetus is developing normally and it is not an ectopic pregnancy; if the hCG value rises or falls slowly, the chance of ectopic pregnancy is relatively high and should be paid attention to.

2. What is the hcg value of ectopic pregnancy blood

Whether it is an ectopic pregnancy or not, it is necessary to continuously check the HCG value to determine. In the early stages of pregnancy, the blood HCG monitoring value in normal pregnancy doubles, but ectopic pregnancy does not have this characteristic, which can be used as a basis for differentiation.

3. Methods for diagnosing ectopic pregnancy

1. hCG determination: Urine or blood hCG is crucial for the early diagnosis of ectopic pregnancy. In ectopic pregnancy, the hCG level in the patient's body is lower than that in intrauterine pregnancy. Continuously measure blood hCG. If the doubling time is greater than 7 days, the possibility of ectopic pregnancy is high; if the doubling time is less than 1.4 days, the possibility of ectopic pregnancy is extremely small.

2. Progesterone determination: The determination of serum progesterone is helpful in judging the development of the embryo in a normal pregnancy. In ectopic pregnancy, serum progesterone levels are low, mostly between 10-25ng/ml. If the serum progesterone value is >25ng/ml, the probability of ectopic pregnancy is less than 1.5%; if its value is <5ng/ml, intrauterine pregnancy abortion or ectopic pregnancy should be considered.

3. Ultrasound diagnosis: If no gestational sac is detected in the uterine cavity, but an abnormal low-echo area is detected beside the uterus, and the embryo and primitive heart tube pulsation are seen, ectopic pregnancy can be confirmed. If there is a mixed echo area and a free dark area in the uterine rectal fossa during parauterine exploration, even if no embryo or fetal heartbeat is seen, ectopic pregnancy should be highly suspected.

Combining blood hCG measurement with ultrasound examination is very helpful in the diagnosis of ectopic pregnancy. When blood hCG>2000IU/L and no intrauterine gestational sac is seen by vaginal ultrasound, the diagnosis of ectopic pregnancy is basically established.

4. Laparoscopic examination: Laparoscopic examination is the gold standard for the diagnosis of ectopic pregnancy, and laparoscopic surgical treatment can be performed at the same time as the diagnosis is confirmed. However, about 3%-4% of patients are missed due to the small gestational sac. They may also be misdiagnosed as a pregnancy due to the dilation and color change of the fallopian tube. This should be paid attention to.

5. Posterior vaginal fornix puncture: suitable for patients suspected of intra-abdominal bleeding. Intra-abdominal bleeding is most likely to accumulate in the rectouterine pouch. Even if the amount of bleeding is not large, blood can be drawn out through puncture of the posterior vaginal fornix. In the case of old ectopic pregnancy, small pieces of old blood or non-coagulated blood may be drawn out. When there is no internal bleeding, the amount of internal bleeding is very small, the hematoma is located higher, or there is adhesion in the rectouterine pouch, blood may not be able to be drawn out. Therefore, a negative posterior vaginal fornix puncture cannot rule out tubal pregnancy.