Definitions for ca-19-9 antigen
ca-19-9 anti·gen

WikipediaRate this definition:0.0 / 0 votes

1. ca-19-9 antigen

   Carbohydrate antigen 19-9 (CA19-9), also known as sialyl-LewisA, is a tetrasaccharide which is usually attached to O-glycans on the surface of cells. It is known to play a role in cell-to-cell recognition processes. It is also a tumor marker used primarily in the management of pancreatic cancer.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. CA-19-9 Antigen

   Sialylated Lewis blood group carbohydrate antigen found in many adenocarcinomas of the digestive tract, especially pancreatic tumors.

How to pronounce ca-19-9 antigen?

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Numerology

1. Chaldean Numerology

   The numerical value of ca-19-9 antigen in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of ca-19-9 antigen in Pythagorean Numerology is: 2

Examples of ca-19-9 antigen in a Sentence

1. Rochelle Walensky:

   We do know that the antigen test may not perform as well as it had for prior variants – the alpha variant and the delta variant – but it’s still picking up quite a bit of infection.

2. Michael Mina:

   Let's say it's a Monday or on Day Zero you get exposed. Day three, you might turn positive on a PCR later that night. Day three and a half or maybe early day four you might turn positive on an antigen test. And so, the whole idea of twice a week is to shave off a considerable part of people's infectious course, and so, if you're using it twice a week, even if you turn positive in the middle of your two tests, by the time you do test, especially because it's rapid, you'll be able to pull yourself out when you've only been spreading for one and a half or two days instead of five days and six days.

3. The FDA:

   The guidance also provides recommendations to test developers, such as considering the potential for future viral genetic mutations when designing their test, and conducting their own routine monitoring to evaluate the potential impact of new and emerging viral genetic mutations, which may be the basis of viral variants, on the performance for molecular, antigen and serology SARS-CoV-2 tests.

4. Senator Tillis:

   Over the last few months, I've been routinely tested for COVID-19, including testing negative last Saturday, but tonight my rapid antigen test came back positive, thankfully, I have no symptoms and I feel well. As we all know, COVID-19 is a very contagious and deadly virus, especially because many carriers are asymptomatic. I encourage all North Carolinians to follow the recommendations of medical experts, including wearing a mask, washing hands, and practicing social distancing.

5. John Whyte:

   The antigen test commonly known as the rapid diagnostic test after which results are provided in minutes to an hour detects specific proteins on the viruss surface. Its usually highly accurate, but it ismore likely to miss an active infection compared to the molecular test, according to the U.S. Food and Drug Administration. Meanwhile, the molecular test, also known as the RT-PCR test, nucleic acid amplification test, or a NAAT or diagnostic test, detects the viruss genetic material and, depending ondemand in the lab, typically takes a day or up to a week for results. This test is highly accurate and usually does not need to be repeated. Those who havesymptoms but have a negative rapid antigen test may require a molecular test to see there isindeed an active infection, according tothe FDA. As it stands now, I think we trade off accuracy for speed, i think we will continue to improve these tests but thats also why being attuned to symptoms and practicing the public health strategies is the way to go for now. Ultimately, we need to do more surveillance testing to really see whats happening in the community. Dr. William Schaffner, a medical professor at Vanderbilt University and medical director of the National Foundation for Infectious Diseases, told Fox News that testing could play a role in certain situations, using a family with young children visiting grandparents as a key example. Testing could have a role in this, though not so much for grandma and grandpa who have [ likely ] been sheltered at home, he said. But William Schaffner, like John Whyte, expressed concerns over testing accuracy and providing a false sense of security to those who receive the test. I think you have to inquire on the front end how long it takes for the results to come back, it tells you what your status is on that day.

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Ca-19-9_Antigen