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Some specimen types also require special treatment, such as immediate mixture with an additive, or storage at a certain temperature. [5] After extraction , all specimen containers must be labeled with at least two of the following identifiers (at the time of collection): patient's name, date of birth, hospital number, test request form number ...
to observe microscopic specimens that cannot be seen by the naked eye. Microtitre plates: mostly used for ELISA: Microtome: cuts prepared specimens for analysis under microscope Nichrome wire loop: used to inoculate test samples into culture media for bacterial or fungal cultures, antibiograms, etc.; sterilized by flaming to red hot before use
The chemical 5-bromo-4-chloro-3-indolyl-beta-D-galactoside is used in the test because N. lactamica can hydrolyze it with the production of β-galactosidase, turning the solution into a blue color. Gamma-glutamyl-p-nitroanilide is added to the solution to indicate whether the bacteria is N. meningitides, which hydrolyzes the molecule with the ...
Subsequently, aliquots of the sample are taken to test for the antimicrobial activity of a specific drug or protein (antimicrobial peptides). Liquid cultures of the cyanobacterium Synechococcus PCC 7002. Static liquid cultures may be used as an alternative. These cultures are not shaken, and they provide the microbes with an oxygen gradient. [6]
Biological specimens in an elementary school science lab. A biological specimen (also called a biospecimen) is a biological laboratory specimen held by a biorepository for research. Such a specimen would be taken by sampling so as to be representative of any other specimen taken from the source of the specimen. When biological specimens are ...
An assay (analysis) is never an isolated process, as it must be accompanied with pre- and post-analytic procedures. Both the communication order (the request to perform an assay plus related information) and the handling of the specimen itself (the collecting, documenting, transporting, and processing done before beginning the assay) are pre-analytic steps.
A researcher observing a specimen through the built-in microscope in a Class III biosafety cabinet Aerosol control platform inside a Class III Biosafety Cabinet The Class III cabinet, generally only installed in maximum containment laboratories, is specifically designed for work with BSL-4 pathogenic agents, providing maximum protection.
During the retention period, specimens are considered to be part of the medical record and must be kept under a CLIA accredited laboratory to ensure compliant handling and storage conditions. [25] [26] If a specimen is sent-out to a non-CLIA biorepository and recalled, the additional testing would not be in compliance. [25]