What is the difference between GIFT and ZIFT?

"When we say GIFT, it means Gamete Intra Fallopian Transfer. Gamete Intra Fallopian Transfer is a procedure when the fallopian tubes are normal. So a patient has to first undergo a follicular study, a ovum pick up is done, the ovum is retrieved. With the semen wash, a semen sample is procured. Both the gamete are taken together and are transferred via laparoscopy into the fallopian tubes and for this the fallopian tubes have to be good. For this the laparoscopy has to be done. This is a technology which is done when there is unexplained infertility, means the ovulation is proper and the sperm is of good quality and inspite of having normal fallopian tubes, the person is not be to conceive. Generally after waiting for 2 to 3 cycles of an IUI, then this technology is used, this is called as Gamete Intra Fallopian Transfer. In this the tube has to be normal and laparoscopy, and one is through a cannula, the gametes are transferred into one third portion of the fallopian tube. What is ZIFT? ZIFT is Zygote Intra Fallopian Transfer. Zygote Intra Fallopian Transfer means an ovum is procured, a sperm count is done, a sperm sample is taken, either by IVF or by ICSI, a zygote is formed and then the embryo that is formed by the artificial technology is then implanted into the fallopian tube. So this is already a baby that is formed.in Gamete Intra Fallopian Transfer, just the gametes are transferred. In Zygote Intra Fallopian Transfer, the fertilized embryo is transferred . So it is more effective and there are more chances of fertility in a Zygote Intra Fallopian Transfer. The fallopian tube is of good quality and that is why it is transferred into the fallopian tube. In an IVF and an ICSI cycle, generally the embryos are transferred into the uterine cavity. The ultimate destination is the uterine cavity"