The SARS-CoV-2 viral antigen is generally detectable in nasopharyngeal swab specimens during the acute phase of infection. Most of the currently available antigen testing devices for the diagnosis of COVID-19 relies on qualitative detection of […]
Visible morphological changes in cell cultures caused by viral infections is called cytopathic effects (CPE). The degree of visible changes to cells caused by viral infection varies with the type of virus, type of host […]
Embroyonated chicken eggs are used for the cultivation of some viruses. The viruses grow in the cells of the embryo and membranes. Specimens are inoculated into pathogen-free fertilized eggs of 10-11 days and are incubated […]
SARS-CoV-2 IgG/IgM rapid test is a lateral flow immunoassay intended for the qualitative detection of IgM and IgG antibodies to SARS-CoV-2 in the blood (serum, plasma) from patients suspected of COVID-19. The SARS-CoV-2 IgG/IgM rapid […]
Immunochromatography is a combination of chromatography and immunoassay. This technology is in use to a wide array of tests for clinical, veterinary, and industrial applications. Depending on the assay, either antigen (for detection of antibody) […]
Viral Transport Media (VTM) are suitable for collection, transport, maintenance and long-term freeze storage of clinical specimens containing viruses, chlamydia, mycoplasma or ureaplasma organisms. It maintains organism viability for 48 hours at room or refrigerated […]
Detection of specific antigens present in the sample (blood, urine, CSF or stool) using immunologic methods such as precipitin tests, particle agglutination tests, immunofluorescence, immunochromatographic or enzyme immunoassays are the mainstay for the rapid diagnosis […]
Cell culture refers to the process by which cells are grown in a controlled artificial environment. Cells can be maintained in vitro outside of their original body by this process which is quite simple compared […]
The term “blotting” refers to the transfer of biological samples from a gel to a membrane and their subsequent detection on the surface of the membrane. Southern blot is used for transferring DNA, Northern blot […]
Dengue and dengue hemorrhagic fever (DHF) are mosquito-borne viral disease caused by dengue virus, an Arbovirus (Arthropod borne Virus). It is transmitted via the bite of infected female Aedes aegypti mosquito. Laboratory diagnosis method for confirming […]
Monospot test is a form of the heterophile antibody test which is used for the rapid screening of infectious mononucleosis (mono). Epstein–Barr virus (EBV) causes the disease infectious mononucleosis. Blood, serum or plasma is taken […]
Japanese Encephalitis (JE) virus was initially isolated in Japan in 1935. It is a leading cause of vaccine-preventable encephalitis (inflammation of the brain) in Asia and the western Pacific. The virus is maintained in an […]
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