A new method for evaluating cervical penetrability using daily aspirated and stored cervical mucus

Area of Science:

• Reproductive biology
• Gynecology
• Infertility diagnostics

Background:

• Assessing cervical mucus quality is crucial for fertility evaluations.
• Traditional postcoital tests can yield false-negative results due to unpredictable mucus changes.

Purpose of the Study:

• To evaluate a novel in vitro method for assessing cervical mucus sperm penetrability.
• To determine if daily aspiration and storage of cervical mucus improves diagnostic accuracy for hostile cervix conditions.

Main Methods:

• Cervical mucus samples were collected daily from 33 women during their periovulatory period.
• Samples were stored for 7-14 days at 4°C before in vitro sperm penetration testing.
• Physicochemical properties and penetrability of fresh vs. stored mucus were compared.

Main Results:

• Stored cervical mucus samples retained their physicochemical and penetrability properties.
• Optimal mucus penetrability was observed on unpredictable days, highlighting limitations of fixed-day testing.
• The new method demonstrated potential to eliminate false-negative results common in other penetration tests.

Conclusions:

• Daily aspiration and storage of cervical mucus provide a reliable method for in vitro sperm penetration testing.
• This technique enhances the accuracy of diagnosing a hostile cervix.
• The method offers a valuable tool to overcome limitations of traditional fertility diagnostic tests.