Specimen Retrieval
Specimen Retrieval - Related Videos
08:42
Retrieval of Mouse Oocytes
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Cited by 13 •
2007
This protocol illustrates the technique for extracting oocytes or early-stage fertilized embryos from the oviduct of mice. The ability to identify the infindibulum and insert a blunt end needle into it is essential to correctly performing the procedure.
01:12
Retrieval
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2025
Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning. Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
05:52
Deployment and Retrieval of Mineral Samplers
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2026
Many important reactive minerals are formed during in situ groundwater remediation; however, conventional drill core-based methods often present challenges in collecting these minerals. This article offers techniques for utilizing the Min-Trap, an innovative passive sampling device, to effectively collect and measure reactive minerals from conventional monitoring wells.
01:45
ER Retrieval Pathway
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2023
In the secretory pathway, vesicles transport proteins from one cellular compartment to another in forward transport to deliver the protein to its correct location. Occasionally, misfolded proteins and incorrect proteins escape their original compartments, and a retrieval pathway is used to return the escaped proteins to their original compartment. The ER uses many checkpoints to prevent the entry of incorrectly folded or a resident protein as cargo onto a transport vesicle. These mechanisms...
08:12
Brain Banking: Making the Most of your Research Specimens
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Cited by 21 •
2009
Brain banking and systematic sampling of biological material provides the basis for unbiased stereology and maximizes the potential data obtained from each specimen.
FAQs
Preservation and transport protect the specimen’s quality between collection and laboratory examination. If cellular detail, tissue integrity, or fluid characteristics are not maintained, subsequent histopathology, cytology, microbiology, or molecular testing may be less informative. Careful handling also helps limit contamination, allowing laboratory findings to reflect the patient’s material rather than unwanted external sources.
The clinical question and the material being sought guide the retrieval approach. Tissue may be obtained with biopsy forceps, fluid with aspiration devices, blood through collection procedures, and surface material with swabs. Matching the specimen type and tool to the intended analysis helps provide material suitable for the relevant diagnostic, monitoring, or research purpose.
Reliable results depend on obtaining an adequate sample while preserving its relevant features and minimizing contamination. The retrieval method, the condition of the material after collection, and the care used during preservation and transport can all influence laboratory interpretation. These factors matter because the final findings may guide diagnosis, treatment planning, or assessment of therapeutic response.
A typical workflow begins by selecting the needed biological material and an appropriate collection tool, followed by obtaining the sample from the patient. The specimen is then preserved and transported for laboratory examination. Finally, the laboratory applies testing suited to the clinical question, such as histopathology, cytology, microbiology, or molecular analysis.
Different analyses answer different questions about the collected material. Histopathology, cytology, microbiology, and molecular testing provide different forms of laboratory information. The appropriate analysis depends on the specimen type and clinical question, so retrieval and downstream testing should be considered together when planning the diagnostic workflow and interpreting the resulting findings.
It is important when clinicians need evidence to identify disease, select or refine treatment, monitor a condition, or evaluate therapeutic response. The same retrieval principles also support research involving patient-derived biological material. Because decisions may depend on laboratory findings, obtaining a suitable specimen and maintaining its quality connects the clinical procedure with meaningful diagnostic or follow-up information.