Is alpha-fetoprotein 7.8 serious?

AFP 7.8 is not serious.
AFP 7.8ug/L is not serious, and the range of normal values is generally less than 25ug/L, which can vary slightly depending on the instrumentation used by each testing facility.
Alpha-fetoprotein (AFP) is a glycoprotein that is synthesized and secreted by the yolk sac and liver cells during fetal life. Therefore, the level of AFP in the human blood circulation is higher in fetuses and newborns, and decreases gradually after birth.
AFP levels are lower in the adult organism, and normal people usually have less than 25ug/L. Therefore, a value of 7.8ug/L is normal.
A test for the level of alpha-fetoprotein is usually indicative of diseases such as hepatocellular carcinoma. It is recommended to go to the hospital promptly if you have symptoms related to pain in the upper right abdomen, yellowing of the skin color, loss of appetite, unexplained weight loss, and so on.