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antigen vs antibody

A 51-year-old member asked:
Dr. Mark Rasak
32 years experience in Cardiology
Good guy vs bad guy: Antigen(the bad guy ) is a foreign material that "invades" the body and the atibody(the good guy) is what the immune systen produces to nuetralize the ... Read More
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A 49-year-old member asked:
Dr. Gurmukh Singh
48 years experience in Pathology
Varies: Most people will make detectable antibodies in about two weeks after receiving rh d positive blood, if the recipient is rh d negative.
A 44-year-old member asked:
Dr. Myron Arlen
63 years experience in Surgical Oncology
Form hybridoma: When an antigen is given to an animal, B cells in serum produce a polyvalent antibody prep. When antigen is given to an animal and spleen cells (B) ar ... Read More
A 52-year-old member asked:
Dr. Gurmukh Singh
48 years experience in Pathology
Unclear question: Treatment with Rhogam can prevent development of antibodies to rh if treated within 72 hours of exposure. However, this is not a do it yourself issue ... Read More
A 65-year-old male asked:
Dr. Gurmukh Singh
48 years experience in Pathology
Not necessarily: The information suggests that you had hepatitis C infection and recovered from it and eliminated the virus from your body. About 20% of the people who ... Read More
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A 35-year-old male asked:
Dr. Gurmukh Singh
48 years experience in Pathology
Past infection: The results you described are consistent with a past infection with hepatitis b from which you have recovered. You body made antibodies to the constit ... Read More
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A 58-year-old male asked:
Dr. Ed Friedlander
43 years experience in Pathology
Treat the person: Lab tests mean nothing in isolation, and have many false positives and false negatives. The decision to make a trial of a gluten-free diet will be bet ... Read More
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A 25-year-old male asked:
Dr. Ed Friedlander
43 years experience in Pathology
You carry hep B: I am assuming you feel well and this was a surprise finding. There are millions of people like yourself. You will require lifelong health care for it ... Read More
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A 62-year-old female asked:
Dr. Tony Ho
Dr. Tony Ho answered
13 years experience in Infectious Disease
Nothing.: Ebv antibodies indicate you had a previous infection, but not active. The c-reactive protein needs a units indicator - that is either normal or somew ... Read More
A 64-year-old female asked:
Dr. Ira Katz
Dr. Ira Katz answered
23 years experience in Endocrinology
Prior Infection: First an apology. I misread the Anti-HBc Reactive & thought it said Non-reactive for some reason. This does change things.I t shows you have had ... Read More
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A 36-year-old male asked:
Dr. Robert Killian
27 years experience in General Practice
HIV Testing: Twelve to twenty-four weeks after exposure.
A 38-year-old female asked:
Dr. Robert Killian
27 years experience in General Practice
Hepatitis B: It means you are neither immune to and do not have hepatitis b. You need to be vaccinated.
A 35-year-old female asked:
Dr. David Rosenthal
20 years experience in Allergy and Immunology
It depends: In a situation like this you have one positive test and one negative test. The lab should run a tie-breaker test (HIV RNA) to give you a real answer. ... Read More
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A 55-year-old female asked:
Dr. Kristel Hunt
22 years experience in Hepatology
Excellent question: and your story stumps many a doctor, often! :) a lot of the recommendations depend on - are you someone with risk factors for HBV? is this the first t ... Read More
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A 60-year-old male asked:
Dr. Gurmukh Singh
48 years experience in Pathology
Yes: Both address presence of antibody to the rhyroglobulin molecule made by thyroid gland. See this site for more info. http://www.nlm.nih.gov/medlinep ... Read More
A 65-year-old male asked:
Dr. James Cain
35 years experience in Nephrology and Dialysis
Probably not: the presence of the antibody indicates an exposure to the antigen (the virus) . the absence of the virus indicates that the virus has been eradicated. ... Read More
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A 25-year-old male asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience in Allergy and Immunology
No: Unfortunately ebv stays alive forever in one's lymphocytes and can get activated easily in susceptible people without known immunodeficiency. However ... Read More
A 30-year-old male asked:
Dr. Hunter Handsfield
52 years experience in Infectious Disease
Conclusive at 6+ wk: Official advice by many agencies is that stand-alone HIV antibody tests are not conclusive until 3 months. However, with the modern tests in current u ... Read More
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A 33-year-old male asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience in Allergy and Immunology
Acute infection: A high igm antibody level usually means current or recent infection with ebv.
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A 55-year-old member asked:
Dr. Joseph Woods
27 years experience in Pathology
Antibody to one site: Monoclonal antibodies (mab or moab) are monospecific antibodies that are the same because they are made by identical immune cells that are all clones ... Read More
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A 65-year-old male asked:
Dr. Mohammad Ashori
15 years experience in Family Medicine
Viral count: The anti-body test is not the most accurate way to diagnose hepatitis C. We usually do a RNA viral count.
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A female asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience in Allergy and Immunology
They don't usually: Antibody does not usually kill an antigen but binds it. The attachment may then, under certain circumstances , triggers the release of certain mediat ... Read More
A 34-year-old female asked:
Dr. Claude Parola
39 years experience in Internal Medicine
Probably: An acute HIV infection can manifest itself with flu like syndrome, rash and a positve p24 antigen and negative elisa( IG antibody test) it can take ab ... Read More
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A 39-year-old member asked:
Dr. Camilla Graham
26 years experience in Infectious Disease
No active infection: When people have reactive hepatitis b surface antigen, they have proteins from hepatitis b in their blood. These people have active infection and may ... Read More
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A 29-year-old male asked:
Dr. Gurmukh Singh
48 years experience in Pathology
See below: Please consult this site for a detailed answer. Nucleic acid tests are conclusive about a month after acquiring infection. http://www.sfaf.org/hiv-inf ... Read More
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90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
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