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Sometimes, when a couple wants a child, the pregnancy is slow to announce itself. The causes of this difficulty can be multiple and as much concern the man as the woman, or both. To take stock, the doctor can prescribe an infertility checkup that includes different exams, including the Hühner test.
Explanations of Dr. Miguel Jean *, Head of the Department of Biology and Development and Reproductive Medicine at Nantes University Hospital.
What does the Hühner test check?
- Cervical mucus is a viscous secretion that obstructs the entrance to the uterus to protect it against the intrusion of microbes. This is the point of passage that sperm must cross to go up to the trunk. It can be an obstacle to fertilization when it is not of good quality. It is opposed to movements of sperm that can not meet the oocyte.
- If he considers that cervical mucus is likely to be the cause of the problem of infertility, the doctor may decide to check the quality using the Hühner test.
- In parallel, it is recommended to practice a spermogram in humans. This examination of the sperm makes it possible to check the number of spermatozoa and also if they are sufficiently mobile to swim to the oocyte.
How is Hühner's test?
- After spotting the moment of ovulation, through ultrasound and hormonal monitoring, the doctor will "prescribe" sexual intercourse. Within 6 to 10 hours after this medicalized intimate relationship, the patient goes to her gynecologist or a laboratory for a mucus sample.
- Hühner's test is positive when the microscopic examination of the mucus reveals the presence of many motile spermatozoa. Conversely, when the spermatozoa are rare and / or immobile, everything suggests that the mucus prevents the passage of spermatozoa: the Hühner test is then declared negative. In this case, and in the light of the results of the spermogram, the doctor can possibly propose to the couple the artificial insemination. This MPA technique involves circumventing the obstacle by depositing the sperm directly into the uterus, that is, behind the cervical mucus.