Cervical mucus is a heterogeneous secretion which comprises 90% water. Has different characteristics, which vary depending on the phases of the cycle of women, because the hormones that regulate the menstrual cycle.

It foregoing, this mucus influences the process of reproduction, it must present good cartacteristicas not affect the espermatozodies during the fertile days of women.

The evaluation of this mucus in the fertile days of women will determine whether there is a problem that influence the reproduction process of the couple.