Normal values in men and non-pregnant women is 0 to 40 ng/mL. In pregnant women from 15 to 18 weeks is 10- 150 ng/mL. In pregnant women, if the levels are high then it suggests:
- Age of baby is wrong
- Multi pregnancy, like twins or triplets.
- The fetus has neural tube defect.
- The baby’s intestines or other abdominal organs are outside the body, in condition named omphalocele.
- The baby is not alive.
In non pregnant women or men, it suggests:
- Cancer of liver or testes or ovaries.
- Liver disease like cirrhosis or hepatitis.
- Alcohol abuse.
If it is low in pregnant women it means:
- Age of the baby is wrong
- Baby may have Down’s syndrome.
In non pregnant adult, alpha feto protein is not present.