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SARS preventive measures 

Last Updated on Dec 18, 2021
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What Are The Different Diagnostic Tests For SARS?

Chest x-ray, blood cultures, and tests to detect viral pathogens are helpful in diagnosing SARS.

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Tests to diagnose SARS include:

  • Chest X-ray (CXR) or chest CT scan: In most people with SARS, changes on CXR or chest CT show pneumonia.
  • Enzyme-linked immunosorbent assay (ELISA) test: This test detects antibodies to SARS reliably, but only 21 days after the onset of symptoms.
  • Immunofluorescence assay: This test can detect antibodies 10 days after the onset of the disease.
  • Reverse transcription polymerase chain reaction (RT-PCR) test: SARS-CoV can be detected in clinical specimens such as blood, stool and nasal secretions with the help of this test.
  • Antibody tests for SARS: Serologic testing also can be performed to detect SARS-CoV antibodies produced after infection.
  • Viral culture and direct isolation of the SARS virus: For a viral culture, a small sample of tissue or fluid that may be infected is placed in a container along with cells in which the virus can grow. If the virus grows in the culture, it will cause changes in the cells that can be seen under a microscope.
  • Serologic testing : A serologic test is a laboratory method for detecting the presence and/or level of antibodies to an infectious agent in serum from a person.

Blood clotting tests

  • Complete blood count (CBC): White blood cell (neutrophils and lymphocytes) and platelet counts are often low.

All current tests have some limitations. They may not be able to easily identify a SARS case during the first week of the illness, when it is most important.

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Dr. Chetan Sharma
Dr. Chetan Sharma
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Ramayana Healthcare And Diagnostics , Vasant Kunj
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Dr. Hiren Popat
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MISHAY HOSPITAL, GOTRI
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