During late pregnancy check-ups, pregnant women often find that their total protein and albumin are low. If, with the exception of pathological conditions such as hypertensive disorders of pregnancy and proteinuria, the total protein and albumin are only mildly low, there is no need to be overly concerned. This is due to the increase in blood volume during pregnancy, which protects the uterus, placenta, and various tissues and organs to increase blood flow, but the increase in plasma is often more than the increase in other blood components, which is clinically known as physiological hemodilution, caused by the special physiological period of pregnancy, due to the dilution of blood, plasma protein starts to decrease from early pregnancy, mainly The decrease in albumin continues until delivery, so there is no need to worry too much when this occurs.