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Mucus invasion test

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This is used to assess the presence of sperm autoantibodies or female sperm antibodies. It is indicated in the presence of a negative postcoital test and a normal semen analysis.

Procedure:

  • place a sample of the partner's sperm on a slide alongside a drop of the woman's ovulatory cervical mucus
  • observe invasion of the mucus by the sperm over the next 15 minutes

Interpretation:

  • failure of sperm to penetrate the mucus, or agglutination of the sperm, suggests sperm autoantibodies
  • immobilisation of the sperm within 10 minutes following normal penetration suggests female sperm antibodies

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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