• Alpha fetoprotein (AFP) is a protein produced by the liver and yolk sac of a developing baby during pregnancy. AFP levels go down soon after birth. It is likely that AFP has no normal function in adults. A test can be done to measure the amount of AFP in your blood.

  • Screen for problems in the baby during pregnancy. (The test is done as part of a larger set of blood tests called quadruple screen.)

  • Diagnose certain liver disorders.
  • Screen for and monitor some cancers.