As compared to singleton pregnancies, twin pregnancies have increased risk as there is a danger of spontaneous abortions, malformations, low birth weight and preterm deliveries. There are many other additional difficulties including gestational diabetes, hypertension, acute fatty liver and placental abruption. These are few pregnancy complications which makes twin pregnancies significantly higher at risks than the singleton pregnancies. In both the cases, an amniotic fluid volume can be measured accurately but there are different techniques used for measuring the amniotic fluid. And in the twin pregnancies case, USG scan is preferred for measuring the amniotic fluid index.