Slide preparation techniques and tips
Fine needle aspiration and nonaspiration
- Use for skin/subcutaneous masses, lymph nodes, and internal organs.
- Select the technique best suited for the tissue to avoid cell lysis or excessive blood.
- Use 22-gauge needles, which work well for most tissue types.
- Use fresh, well-mixed anticoagulated blood to avoid specimen deterioration.
- Maintain an approximate 30° angle between the spreader and specimen slide throughout.
- Spread the specimen in one smooth, steady motion.
- Use for body cavity effusions, bronchoalveolar lavage (BAL)/tracheal lavage, and joint fluid.
- Include a direct smear; use an additional line smear for specimens with low cellularity, or suspected infectious agents. If needed, use a squash prep for flocculent material.
- Submit a buffy coat and a direct film for specimens with large blood content.
- Use 5 mL of fresh, well-mixed, centrifuged urine (set centrifuge to urine/400 x g).
- Maintain an approximate 30°–40° angle between the spreader and specimen slide.
- Spread the specimen halfway down the slide; stop abruptly to create a line.
How to stain slides
Always remember to:
- Follow the recommended stain times.
- Check slides to see if additional staining is required.
- Replace stains as needed to prevent stain precipitate.
Follow these 5 steps to stain slides
Dip in fixative
Dip in red stain
Dip in blue stain
Dip in water
Dip in water
How to select and submit the best slides for review
To obtain a clinically relevant interpretation of the lesion, scan only slides that are representative of the lesion and are of good quality and cellularity.
To select your best slides:
- Check for even staining and visible material “blue to purple.”
- Inspect for intact cells by microscope or by reviewing the scanned image.
What to do if another slide is requested
An IDEXX pathologist will ask you to resubmit a slide when the slides initially submitted cannot be interpreted.
This can happen for many reasons, for example:
- A slide was scanned stain-side down.
- A slide was not secured properly in the slide tray.
- The pathologist needs a different perspective.
- A slide has insufficient intact cellular material.
NOTE: The process for resubmitting a slide is different from the initial submission.
Results, reports, reassurance
Within 2 hours, pathology results are integrated directly into your practice management system and in VetConnect PLUS. Just pick up the phone or email the pathologist dedicated to your case from start to finish if you have any questions.
Use VetConnect PLUS to simplify case management even more:
- View and share reports and high-resolution image.
- Review interpretation and comments.
- Access all IDEXX diagnostic results, alongside pathology, for a comprehensive patient view.
Frequently asked questions
Use the power switch on the back of the instrument to turn the power off and then on. Make sure that the instrument has been powered on for 20 seconds before restarting the IDEXX Digital Cytology computer. Turn on the computer using the power button in the lower-right corner of the monitor. IDEXX recommends shutting down and restarting the IDEXX Digital Cytology instrument and its computer at least once per week.
No. To provide all customers with results in 2 hours or less, we cannot direct cases to specific pathologists. Doing so would delay the receipt of reports with results and interpretations. What you can do is discuss your case with the pathologist dedicated to working with you from start to finish. You can access that pathologist directly via phone and email.