Why don't they use a electron microscope to test for covid19 ?

10 Answers

  • 3 weeks ago

    Not practical in terms of obtaining a picture of a sample, and just looking at it would not tell you its genetic structure.

    Source(s): Just some undergrad microbiology classes in pharmacy school.
  • Jim
    Lv 7
    4 weeks ago

    It's inefficient. Much faster and cheaper to use other methods.

    Electron microscopes are excellent at taking closeups of fine structures.

  • 4 weeks ago

    And how would they do that? The Sars-CoV-2 virus is tiny.  It's a snippet of RNA, and would be difficult to detect among all of the other molecules one might be looking at. Plus, at that size, the resolution electron microscopy is quite poor.  Also just preparing the sample is problematic.

  • 1 month ago

    An Electron microscope is for looking at electrons. 

    Electrons are much smaller than the Covid-19 virus. 

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  • Dr W
    Lv 7
    1 month ago

    Have you ever used an electron microscope?  cost, timing, capability, sensitivity, reproducibility,  etc.  Imagine spending 1 entire week staring at 1 million images of 1 drop of 1 persons blood looking for COVID-19 capsoids.  Only to find that 1 drop was not representative of the other 100,000 drops (# of drops in an average human) of your patient..  

  • 1 month ago

    Because "they" know a whole lot more about it than you do.

  • 1 month ago

    There are many reasons, some of which the other answerers have touched on.

    In addition to those, I doubt there is any reason to suppose an electron microscope can distinguish a covid19 virus from any other coronavirus (of which there are many) just by looking at it.

    (And while I'm at it, you might get better answers by moving this question to Medicine, since it's not really about Chemistry.)

  • 1 month ago

    look,as it is virus.you need to give sample from your nose,blood etc.if the virus escaped in earth then it would be very much contagious & contaminated.as there is a debate that" the virus is spreading through air or not".so real time RT-PCR(reverse transcription–polymerase chain reaction)  machine is used to determine the presence the nano scale virus.

  • Using an electron microscope to find a virus within the body would be an incredibly time consuming task, especially if the virus hasn't yet spread around the body. Imagine trying to find a needle in a hay stack the size of a small country. 

    I'm sure they have used electron microscopes to observe the virus in certain organic samples like a sample of blood, however not only would it be a very time consuming and expensive way to determine whether or not an individual does have Covid-19, but the current methods of testing to confirm cases is much faster and can be offered country wide.

  • User
    Lv 7
    1 month ago

    Because that device

    is not very useful

    for that purpose


    it would require a lot of time

    on a very expensive machine

    (and: a relatively rare machine)

    to detect C-19 in a sample of blood.

    It's sort of like asking

    - "Why don't you go outside and use your microscope to find an ant nest."

    It's not even close to being the best tool for the job.

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