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[Chemical Knowledge]：How to Preserve Pathological Specimens

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Pathological specimens are tissue or cell samples collected from the human body, which are analyzed and diagnosed by pathological examination. In clinical treatment, the diagnosis of pathological specimens plays a vital role in the diagnosis, treatment and prognosis of the disease. Therefore, in the collection, preservation and processing of pathological specimens, a series of standards and norms need to be paid attention. Let's discuss the preservation of pathological specimens.

1. pathological specimen collection

pathological specimen collection is the basis of diagnosis, must strictly follow the norms and standards of specimen collection, in order to avoid sample contamination or destruction. If the sample is contaminated or misplaced, it may lead to errors in the cause analysis, thus affecting the quality of the final diagnosis.

1. Preparation of the collection site

Before collecting pathological specimens, the collection site must be prepared first. Disinfection must first be carried out to eliminate the source of bacterial and viral infections on the site. In order to avoid contamination of samples by dust or other unclean objects on site, it is also necessary to clean and organize the site.

2, specimen collection method

pathological specimen collection must follow the correct methods and techniques. When sampling, medical instruments that meet the requirements should be selected and strict preparations should be made. The sample is collected to conform to a specific morphology and size, while following the correct adverse anatomical path in order to obtain an accurate sample. In addition, we must grasp the time of the specimen to keep the specimen intact and fresh. At the same time in the collection process to avoid damage or contamination of the sample.

2. the preservation of pathological specimens

For the preservation of pathological specimens, strict standards and norms are necessary. The following points need to be paid attention to when handling pathological specimens.

1, fixed as soon as possible after processing

pathological specimens should be processed and fixed as soon as possible after collection. When fixing samples such as tissues and cells, appropriate methods and agents should be selected and the operation should be carried out within a specified period of time. It is also necessary to pay attention to the proportion of the fixing solution and the length of the fixing time to ensure the quality and integrity of the specimen.

2. Use appropriate containers to

pathological specimens should be stored in appropriate containers to avoid contamination or damage to the specimens. When choosing a container, you must take into account the volume and shape of the sample, and pay attention to the tightness and material quality of the container. At the same time, it is necessary to mark the container appropriately, mark the name of the specimen, the date of extraction and other information.

3. Reasonable preservation time

the preservation time of pathological specimens is a problem that needs special attention, because the longer the preservation time of samples, the worse the quality will be, which may affect the quality of samples. In general, the storage time of pathological specimens should not exceed 1 year. During the shelf life, regular inspection and maintenance should be carried out, such as the need to replace the storage container, change the preservation liquid, change the label, etc. Transport of

3. pathological specimens