Zift and Gift are two different assisted reproductive techniques (ART) used to help couples conceive a child. While both are similar in their ultimate goal, they differ in the way they are carried out.

Gift (Gamete intrafallopian transfer) and Zift (Zygote intrafallopian transfer) are two procedures in which the fertilization process is carried out outside the body and then the resulting embryo is implanted into the female reproductive system.

Gift - Gamete intrafallopian transfer
Gamete intrafallopian transfer (GIFT) is a procedure used for treating infertility. In this procedure, the female's eggs are harvested, mixed with the male's sperm, and then immediately placed into the fallopian tubes for fertilization to occur. GIFT involves the transfer of the female's eggs and the male's sperm into the fallopian tubes, where fertilization takes place naturally.

Zift - Zygote intrafallopian transfer
Zygote intrafallopian transfer (ZIFT) is a procedure that involves fertilizing the egg outside the female's body and then placing the resulting zygote into the fallopian tube. Unlike GIFT, ZIFT involves fertilizing the egg outside the body, which takes place in a laboratory. Once the eggs have been fertilized, the embryos are then transferred into the fallopian tubes.

Difference between Zift and Gift
The main difference between GIFT and ZIFT is the stage at which fertilization occurs. In GIFT, fertilization occurs naturally in the fallopian tubes, while in ZIFT, fertilization occurs outside the body in a laboratory. Additionally, the transfer of the fertilized eggs (zygotes) occurs at a different stage in each procedure. In GIFT, the eggs and sperm are transferred to the fallopian tubes before fertilization occurs, while in ZIFT, the fertilized eggs are transferred to the fallopian tubes after fertilization has occurred.

Conclusion
Both GIFT and ZIFT are used to help couples conceive a child when traditional methods of conception have failed. While both procedures involve the transfer of fertilized eggs into the fallopian tubes, they differ in the way fertilization occurs. GIFT involves the transfer of eggs and sperm into the fallopian tubes before fertilization occurs, while ZIFT involves the transfer of fertilized eggs into the fallopian tubes after fertilization has occurred.