These two terms are very frequently mentioned during each one of your visits to the fertility clinic. Both of them imply different techniques using the same gametes, sperm and egg. ICSI stands for Intra Cytoplasmic Sperm Injection. This is a technique, which takes one sperm inside a needle, and the sperm is then injected into the egg. IVF stands for the In Vitro Fertilization technique, which is the placement of a sperm sample on a dish containing one or more eggs. This way the sperm will naturally penetrate de egg. Both techniques are complex and require to be performed in an embryology laboratory. Doctors usually have different criteria to decide if a patient goes to ICSI or IVF. Some of the criteria to do ICSI are: Poor quality sperm. This can be shown either in the quantity, motility or morphology. Patients over 40 years old Prior IVF failures Borderline sperm DNA fragmentation Criteria to consider IVF: Go...