FIRST TRIMESTER
In the first trimester of pregnancy, screening tests include:
APP-A
B-hCG
Nuchal Translucency Remember:

MNEMONIC: First Trimester = “Now Pregnancy Begins”
Nuchal Translucency
PAPP-A
B-hCG

SECOND TRIMESTER
In the second trimester of pregnancy, screening tests include:
The Triple Screen
or
The Quadruple (“Quad”) Screen Think: “2, 3, 4”

Triple Screen includes:
Maternal Serum alpha-Fetal Protein (AFP)
Estriol
B-hCG

MNEMONIC: If the Triple Screen has you BEAT...
B-hCG
Estriol
AFP
Triple Screen

The Quadruple Screen includes:
Maternal Serum AFP
Estriol
B-hCG
Inhibin

Remember: The Quad Screen = The Triple Screen in addition to one more...Inhibin