PREPARATION AND USE OF FIXATIVE SLIDES FOR THE DIAGNOSIS OF TRICHOMONAS VAGINALIS.

Area of Science:

• Microbiology
• Cytology
• Parasitology

Background:

• Microscopic slides require effective fixation for accurate cytological analysis.
• Preservation of cellular morphology is crucial for diagnostic accuracy, especially in mail-in specimens.

Purpose of the Study:

• To develop and evaluate a novel fixative slide technique for preserving cytological specimens.
• To assess the utility of this technique for diagnostic laboratory services and specific infections.

Main Methods:

• Microscopic slides are treated with a mercuric chloride and sucrose solution in 30% alcohol, forming a fixative film.
• Fluid specimens containing cells are applied to the treated slides for immediate fixation.
• Prepared slides are stored and later stained and examined for diagnostic purposes.

Main Results:

• The fixative slide technique preserves finer cytological details effectively.
• The method is suitable for diagnostic laboratories receiving specimens via mail.
• Successful application in diagnosing Trichomonas vaginalis infection, with detection rates of 38.6% in fixative slides compared to 47% by phase-contrast microscopy.
• Co-infection with Neisseria gonorrhoeae detected in 10% of cases.

Conclusions:

• The fixative slide technique offers a reliable method for preserving cytological samples for later examination.
• This technique is particularly advantageous for diagnostic services handling delayed specimen transport.
• Potential applications extend to exfoliative cytology and the diagnosis of primary syphilis.