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"In the United States, the Clinical Laboratory Improvement Act (CLIA) of 1988 describes requirements and guidelines for implementing a quality control/quality assurance (QC/QA) program for moderate and high complexity laboratories. These requirements and guidelines apply to Assisted Reproductive Technology (ART) laboratories as well. The general topic of QC and QA as it pertains to in vitro fertilization (IVF) and embryo transfer (ET) is extensively reviewed. This review summarizes many of the QC and QA events that contribute to the advancement of knowledge in this biotechnological field. These events include control of the culture environment inside and outside of the incubator, as well as factors that affect culture media. This review also discusses, in considerable detail, the QC and the QA that pertain to equipment used within the laboratory and how to control for potential contaminants, which reside within the laboratory. This review provides evidence to indicate the need for laboratory personnel to monitor quality improvement issues on a continuous basis. Personnel must be willing to change as improvements in technology occur in order to meet the ever-evolving demands of a more difficult patient population. Suggestions for meeting these demands are offered"

"after the world witnessed groundbreaking early advances in assisted reproduction that utilized conventional in vitro fertilization in the human, more complex invasive techniques of oocyte and embryo manipulation were introduced to treat human subfertility. amongst these were numrous micromanipulation techniques such as partial zona dissection (PZD; 1988), subzonal insemination (SUZI, 1988) and subsequently ICSI, which became the most powelful tool of assisted fertilization (1992). ICSI requires micromanipulation of both the male and the female gamete. another importand approach is laser-assisted opening of the zona pellucida at different stages of preimplantation development either; to assist hatching (1990) or to remove cells for preimplantation genetic diagnosis (1989), or fragments to restore the integrity of an embryo (1999). sometimes even blastocysts considered for vitrification need further manipulation in order to artificially shrink the blastocoel which facilitates survival of expanded blastocyst (2002). other methods for reproductive purposes, however, failed to gain acceptance in population, such as cytoplasm transfer (1997), nuchler transfer (1998) and cloning (1996), to name but a few"