Reference range for normal hCG levels in唐氏筛查 (Down syndrome screening)

In daily life, many people enjoy having regular health checkups to monitor their well-being. Some individuals may come across the term "Down syndrome screening HCG value" in their medical reports. So what is the reference range for normal HCG values in Down syndrome screening?

Reference Range for Normal HCG Values in Down Syndrome Screening

After conception, HCG levels rise rapidly. Down syndrome screening evaluates two markers: HCG and AFP, primarily to assess the risk of fetal neural tube defects or abnormalities. The normal reference range for HCG in Down syndrome screening is 0.6MoM–2.566 MoM. AFP stands for alpha-fetoprotein, with a normal range of 0.5MoM–2.6 MoM. Both values are obtained by dividing the measured biomarker levels in a pregnant woman by the median value of the same marker in healthy pregnant women at the same gestational week.

There are three main reasons why HCG values in Down syndrome screening might be low: incorrect calculation of gestational age, slower embryonic development, or testing errors. Down syndrome screening (short for prenatal screening for Down syndrome) is mainly used to estimate the likelihood of the fetus having Down syndrome. Whether the HCG value is high or low does not directly affect the screening outcome. A low HCG value in the test only suggests possible risks such as preterm birth or poor fetal growth. However, a low HCG value isn't necessarily concerning, because a lower HCG level can actually indicate a reduced risk of Down syndrome, which is a favorable result.

It's important to maintain good self-care habits, strengthen immunity and resistance, ensure balanced nutrition, pay attention to diet, and avoid illness. If any abnormalities occur, seek timely medical examination and treatment. We hope this response has been helpful to you. Wishing you good health and happiness!