What are the steps involved in preparing cytology sample?
In the cytology laboratory various sample preparation steps are performed prior to analysis including centrifugation to concentrate cells in dilute samples, followed by preparation and staining of slides, and examination under a light microscope (Figure 1).
How do you make a slide swab?
How to make a wet-mount slide
- Collect a thin slice of your sample and place it on a clean, dry slide.
- Place one drop of water over your sample.
- Place the coverslip at a 45-degree angle with one edge touching the water and let go.
- Your slide is ready to be viewed.
How do you Destain a cytology slide?
Wash slides in deionized or distilled water for 5 min at room temperature. Destain slides in 0.5% HCl in 70% ethanol for 5-15 min at room temperature. Wash slides in deionized or distilled water for 5 min at room temperature.
What is cytological preparation?
In general, aspirate smears, needle rinses and cell blocks, alone or in combination, are prepared from a given sample. Aspirate Smears A close attention to smearing technique is required to maximize the diagnostic yield if aspirate smears are pre- ferred.
What are the methods of smear preparation?
Four different types of smear preparation methods (conventional method, blood film method, drop and rest method, and water-wash method) were carried out according to the standard reference as described below.
How do you collect a cytology specimen?
Prepare 1-2 slides per brushing. If separate sites are brushed, the slides should be properly marked. 3. The specimen should be sent to the Laboratory accompanied by a Cytology requisition/transmittal completed with the patient’s name, hospital number, room number, requesting physician and source of specimen.
What is slide preparation?
Slide preparation begins with the fixation of your tissue specimen. This is a crucial step in tissue preparation, and its purpose is to prevent tissue autolysis and putrefaction. For best results, your biological tissue samples should be transferred into fixative immediately after collection.
How do you prepare a microscope slide for bacteria?
Use an inoculating needle to add a drop of saline to a clean slide. Take a sample of a single bacterial colony and mix it into the saline. Let air dry until a white film appears. Heat fix by passing the slide through a flame a few times.
How do you Destain tissue?
Clinically, we de-stain H&E slides as a regular protocol using 1:1 Xylene/Acetone solution to remove the coverslip and 1% Acid (HCl) Alcohol to remove the stains. Acid alcohol is used in regressive hematoxylin staining regularly and eosin is quickly removed by both acetone and alcohol.
Which stain most commonly used in cytology?
Papanicolaou’s stain
Papanicolaou’s stain (PAP stain) is the most important stain in cytology and is used in all cervical smear and non-gynaecologic exfoliative smears.
What is cytological slide?
Cytology Adhesive Microscope Slides …that attracts and chemically bonds fresh or frozen tissue samples to the slide surface. Slides are 25 x 75mm, 1.0-1.1mm thick, have ground edges and are pre-cleaned. Slides also have a white frosted area for labeling.
How do you prepare a smear slide on a microscope?
Culture from solid media: Using a sterile pipette, add one drop of sterile saline or sterile water to the center of the microscope slide. Aseptically pick a small amount of an isolated colony with a loop and gently mix into the drop of sterile saline or water using circular motions. Mix evenly to make a thin smear.
How do you prepare microscope slides?
To prepare the slide:
- Place a drop of fluid in the center of the slide.
- Position sample on liquid, using tweezers.
- At an angle, place one side of the cover slip against the slide making contact with outer edge of the liquid drop.
- Lower the cover slowly, avoiding air bubbles.
- Remove excess water with the paper towel.
How do you Destain an H and E slide?
What is H and E staining used for?
H and E staining helps identify different types of cells and tissues and provides important information about the pattern, shape, and structure of cells in a tissue sample. It is used to help diagnose diseases, such as cancer.
Which are staining methods in cytology?
Two of the most commonly used cytological stains are: • Papanicolaou (PAP) stain – Papanicolaou stain is a modi- fied hematoxylin and eosin (H&E) stain and is recom- mended for the staining of alcohol fixed cytology slides 1.
How do you prepare tissue samples for microscope slides?
Tissue processing – Using paraffin wax, process the tissues into microscopic sections. First, dehydrate your specimen by immersing it in an increasing level of alcohol. This should remove any water or formalin from the tissue.
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