• Transport Medium for Viral Specimen Sep. 26. 2020
    Definition of transport medium Transport media are special media formulated to preserve a specimen and minimize bacterial overgrowth from the time of collection to the time it is received at the laboratory to be processed. Depending on the type of organisms suspected in the sample, transport media may vary. However in general, transport media are classified on the basis of physical state as semi solid and liquid and also in basis of their utility as bacterial or viral transport media. Transport media contains only buffers and salt instead of containing any nutritional ingredients such as carbon, nitrogen, and organic growth factors so as to prevent microbial multiplication. Addition of antibiotics and other substances like glycerol may be added for transporting specimens for tissue culture. Classification of commonly used transport mediums 1.Inactive preservation • Instantly inactivate viruses. • Reduce the risk of pathogen spread due to medium incomplete inactivation or other causes.(during transport, storage, use, etc.) • More suitable for collectuon of potentially harmful pathogens and known pathogens of severe infectious diseases (such as 2019-nCoV, Ebola virus, etc.) and provides good protection for medical personnel. 2.Cultured preservation • Collection, nucleic acid detection and isolated culture of virus. • The formula is upgraded from HBSS, with adding of multiple components like BSA, Tris and has better ability than HBSS to maintain virus integrity.
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  • Why choose flocked nylon swab for clinical sample collection Aug. 20. 2020
    The success of diagnosis depends largely on th he quality of the specimen. Disposable Specimen Collection Swab is suitab le for collection and release of clinical specimens containing viruses, chlamydia and mycoplasma or ureaplasma organisms. Flocking swab adopts unique spray type nylon pile implantation technology, and the open fiber structure which has outstanding sample collection ability, and allows for more efficient release of microorganisms collected in a specimen onto culture medium。 Compared with the traditional fiber swabs, flocked swabs are ideal for collecting large amount of cells and rapid elution of the specimens instantly release the cells into the transport medium. It is well recognized and adopted by the diagnostic test kit manufacturers who produce reagents in molecular genetics, forensics, clinical laboratories sectors. The completely inert components desiign makes the flocked swabs ideal for PCR work for scientists using PCR techniques, therefore, the new flocked swabs are PCR compatible and certified RNAse and DNAse free.
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  • Test procedure of Sars Cov-2 rapid antigen test Apr. 09. 2021
    Use Sars Cov-2 rapid antigen test kit, the detection result can be get in 10-15min. Sampling the specimen with different swab (oropharyngeal swab, nasopharyngeal swab anterior nasal swab), there are different test process that should be followed. TEST PROCEDURE Allow the test, specimen, buffer and/or controls to reach room temperature (15-30°C or 59-86℉) prior to testing. 1.   Preparation:Open the cap ofextraction tube, transfer the extraction buffer into the extraction tube. 2.   Sample Collection:Use the NP/OP swab provided in the kit to wipetheback wall of the nasopharyngealcavity deep in the nasalcavity (NP swab), or swab overthe lateraland posterior walls of pharynx, as wellas the intratonsillarcleft (OP swab). 3.   Sample Extraction:Insert the swab into the tube,slowly rotate the swab for mixing of the sample and the extraction buffer.Pinch the tube when removing the swab,put the used swab into biohazard bag,and then close the extraction tube with dropper. 4.   Assay procedure:Remove the test cassette from the foil pouch, place the cassette on a clean and level surface .Reverse the specimen extraction tube, holding the specimen extraction tube upright, transfer 3 drops (approximately 80pL) to the specimen well (S) of the test cassette, then start the timer. Interpretation is available within 10-15 minutes.Wait for the colored line(s) to appear. Do not interpret the result after 20 minutes. INTERPRETATION OF RESULTS Positive(+): Two colored lines appear. One colored line should always appear in the control region (C) and another apparent colored line adjacent should be in the test region (T). *NOTE: The intensity of the color in the test line region may vary depending on the concentration of SARS-CoV-2 antigen present in the specimen. Therefore, any shade of color In the testline region should be considered positive. NEGATIVE(-): One colored line appears in the control line region (C). No line appears in the test region(T). INVALID: Control line fails to appear. Insufficient specimen volume or incorrect procedural techn...
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