Smear Test
Smear Test - Related Videos
01:26
Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture
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2024
Sputum studies are a critical part of diagnosing and treating numerous respiratory conditions. These studies involve obtaining sputum samples for analysis to identify pathogenic organisms and assess the presence of abnormal cells indicative of malignant conditions. This lesson will delve into three fundamental sputum studies: Gram Stain, Cytology, and Acid-fast Smear and Culture. Gram Stain The Gram Stain is an integral part of sputum studies. It involves the staining of sputum, which permits...
07:53
Interphase Fluorescence in situ Hybridization of Bone Marrow Smears of Multiple Myeloma
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Cited by 2 •
2022
Here, we present a protocol for improving the success of interphase fluorescence in situ hybridization detection on bone marrow smears from multiple myeloma patients.
04:57
Comparative Analysis of Automatic Fecal Analyzer versus Direct Wet Smear Microscopy for Detecting Parasitic Infections in Stool Samples
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2025
Parasitic infections pose a significant public health challenge, especially in developing countries and regions. This study compares an Automatic Fecal Analyzer to assess its diagnostic efficacy with that of the traditional Direct Wet Smear Microscopy method.
07:58
Quantifying Fibrillar Collagen Organization with Curvelet Transform-Based Tools
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Cited by 10 •
2020
Here, we present a protocol to use a curvelet transform-based, open-source MATLAB software tool for quantifying fibrillar collagen organization in the extracellular matrix of both normal and diseased tissues. This tool can be applied to images with collagen fibers or other types of line-like structures.
09:30
Microbial Control and Monitoring Strategies for Cleanroom Environments and Cellular Therapies
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Cited by 2 •
2023
The protocol summarizes the best practices to minimize microbial bioburden in a cleanroom environment and includes strategies such as environmental monitoring, process monitoring, and product sterility testing. It is relevant for manufacturing and testing facilities that are required to meet current good tissue practice standards and current good manufacturing practice standards.
FAQs
Fixation prepares the spread specimen for staining and microscopic examination. By treating the material before viewing, the procedure helps preserve the features that need to be assessed, including cell shape, arrangement, and abnormal characteristics. Without this preparation step, the visual evidence needed for interpretation may be less suitable for identifying disease-related changes.
Chemical dyes make structures within the specimen more visible under a microscope. This contrast allows an examiner to distinguish cell features, arrangements, and other abnormal findings that may not be apparent in an unstained sample. The selected staining method therefore influences which characteristics can be recognized and what type of diagnostic evidence the smear provides.
A smear may contain cells, blood, or microorganisms, and each specimen provides different information. Cell smears support assessment of morphology and arrangement, blood smears support evaluation of blood cells, and microorganism-containing samples support detection of infectious organisms. Interpretation must therefore relate the visible findings to the material examined and the staining approach used.
Microscopy can show changes in cell shape, cellular arrangement, and other abnormal features after the specimen has been fixed and stained. In blood samples, the visible material can support blood-cell evaluation, while other specimens may reveal disease-related cellular changes or infectious organisms. These observations provide evidence for deciding whether further testing or clinical action is appropriate.
The material is spread as a thin layer on a glass slide, then fixed and treated with chemical dyes before microscopic examination. The laboratory examines the prepared slide for relevant cellular, blood-related, or microorganism-related findings. Results can provide rapid evidence that supports diagnosis, treatment decisions, additional testing, or continued health monitoring.
In cervical cancer screening, the method examines cervical cells for disease-related changes. Fixation, staining, and microscopy make cellular features visible so that abnormal findings can be recognized. The result can help guide whether further testing or clinical follow-up is needed, making the procedure useful for screening and ongoing monitoring rather than serving only as a general laboratory observation.
Blood smears allow laboratory personnel to examine blood-cell features, while appropriately prepared samples can also help detect infectious organisms. The findings provide relatively rapid evidence that may support diagnostic decisions and determine whether further investigation is warranted. Because the specimen and staining method shape what becomes visible, the examination is selected according to the clinical question.