“…But, when NSMI exceeded 10 million, our results showed a slight non-significant decrease in pregnancy rate, which could be related to excessive production of free radicals by the spermatozoa. Most authors recommend IVF when the number of motile sperm is <1 × 10 6 [11, 12, 16 and 17]Some authors suggested using the total number of motile spermatozoa of the initial sperm count (before semen treatment) as the criterion for choosing between IUI and IVF, and have recommended threshold values ranging from 5 to 10 × 10 6 [18,19]. In other studies, total sperm motility before semen treatment was mentionedwith a cut-off level between 30 and 50% [20, 21, 22 and 23].The usefulness of this criterion, however, is limited by the variability of quality from one ejaculation to another, as well as the variable results of sperm preparations.Our study shows no significant difference in sperm motility before sperm treatment, between patients who achieved pregnancy and those who failed Sperm morphology using strict criteria is well known as one of the best predictors of IVF outcome [24, 25 and 26].…”