What is the Success Rate of IVF?

Although the age of the expectant father is also important in the success rate, it is the age of the expectant mother that is determinant. The chance of success in the first IVF trial between the ages of 20 and 30 is around 70%. While the chance of success is 50% at the ages of 30-35, it decreases to 45% between the ages of 35-37. The chance of success decreases to 30% in the 38-40 age range and 20% in the 40-42 age range.