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Doctor insights on: Postive Antigen And Negative Antibody Elisa Test Result

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Antigen (Definition)

Antigens are chemicals which upon exposure to the surface or inside of the body, will cause a reaction term allergic. Many substances will do this and allergic response is the basis for immunological protection for ...Read more


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Can you get ELISA HIV antibody test result within an 1 hour from hospital?

Yes.: The test can technically be done in less than an hour. However, time taken for blood draw, transportation to the lab and if the tests are batched, will all add time and it may take a day or so to get the results. ...Read more

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Hepatitis a antigen antibody test result, how to interpret it?

Hepatitis a antigen antibody test result, how to interpret it?

IgM and IgG: Igm antibody to hepatitis a virus indicates recent infection that may explain current hepatitis. Igg antibody may be due to past/remote infection or immunization. ...Read more

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Test result was "Hepatitis Surface Antibody - Nonreactive" and "Hepatitis B Surface Antigen - Reactive", "HBS AG Confirmation - Nonconfirm".

Test result was "Hepatitis Surface Antibody - Nonreactive" and "Hepatitis B Surface Antigen - Reactive", "HBS AG Confirmation - Nonconfirm".

Hmmmm: Got me beat. A reactive Hep B antigen indicates that you have Hepatitis B. However, It looks like the test was NOT confirmed. My experience with labs is that their report format could use some improvement and you may be misreading this. Talk to the doc who ordered the test. ...Read more

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Anti HCV antibody test result = negative, what it mean?

Anti HCV antibody test result = negative, what it mean?

Depends on exposure: Negative hep c antibody means no evidence of chronic hepatitis c infection. In acute hep c or in setting of immunosuppression, hcv viral load testing is helpful because hcv RNA can be detected within 2-3 days after exposure. Antibodies to hcv are detectable an average of 7-8 weeks after exposure. ...Read more

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What does a test result showing hepatitis b surface antigen negative non reactive mean?

What does a test result showing hepatitis b surface antigen negative non reactive mean?

No hep b: Hepatitis b surface antigen is present during an active infection with hepatitis b. When it is negative, it means that there is no hepatitis b virus particles in your bloodstream. It could mean you have never had hepatitis b, or you no longer have hepatitis b. ...Read more

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What is the test result range for both negative & positive for HSV antibodies IgM & igg? Ex. <0.9. .. Etc

What is the test result range for both negative & positive for HSV antibodies IgM & igg? Ex. <0.9. .. Etc

Differs by lab: What you are asking is for the normal "reference ranges" for these tests. Reference ranges are established by each laboratory based on their testing equipment and vary from lab to lab. There is no universal reference range for these or other lab tests. You would need to ask for the range at the lab where the tests were run. ...Read more

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If anti HCV antibody test result = negative, still is there any chances virus left in blood which can spread?

Yes: If you were recently infected, it is conceivable that the anti-hcv antibody test could be negative but you could still have virus in your blood. ...Read more

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After anti HCV antibody test result = negative, still is there any chances virus left in blood which can spread?

After anti HCV antibody test result = negative, still is there any chances virus left in blood which can spread?

Unclear: I am unclear of your question. I think you mean that the viral load is negative, presumably after treatment. If that is the case then you have cleared the virus and you are not contagious. The antibody test will never change and will always be positive (abnormal). ...Read more

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I've had a strong positive ANA test result. All the various antibody tests are negative. Symptoms are, joinfpain fatigue hive episode, fevers, etc.?

I've had a strong positive ANA test result. All the various antibody tests are negative. Symptoms are, joinfpain fatigue hive episode, fevers, etc.?

Close but not there: Doesn't sound like you have a rheumatologic illness yet. You may develop one. If your ANA was positive at greater than 1:640 you should be monitored every six months for progression of symptoms if not you should be monitored less often. ...Read more

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Hep-c test =positive and anti HCV antibody test result = negative what it mean? And is it require to take HBV vaccination?

Hep-c test =positive and anti HCV antibody test result = negative what it mean? And is it require to take HBV vaccination?

Unrelated issue: It sounds like the screening test for hcv was positive, but not confirmed. This would not speak to the need or lack thereof for hepatitis b vaccination. ...Read more

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On Mitochondrial antibody test by Elisa, 0-20 neg, 21-24.9equivocal, 25&>pos? Would a level of 29 be a low positive?

Yes: The decision to treat for primary biliary cirrhosis, or just to watch, will be based on several factors, one of which is the level of the AMA. ...Read more

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I have read in medical journals that opiates have been shown to have a negative effect on the bodies ability to produce antibodies. Would this make a person less likely to test positive for a disease using the elisa test if they had to go on opiates?

Not aware: Do you have the reference on the opiate effect since I am not aware of such link. However people may potentially have a depressed immune system when they suffer from a chronic illness or pain. Nonetheless, I don't expect opiate per se to affect testing on antibody either in quantity or quality. ...Read more

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Is ELISA test for HIV 1 & 2 antibodies conclusive after 8-9 weeks of exposure? Does NON-REACTIVE mean NEGATIVE?

Is ELISA test for HIV 1 & 2 antibodies conclusive after 8-9 weeks of exposure? Does NON-REACTIVE mean NEGATIVE?

ELISA for HIV: The ELISA test is not conclusive after any amount of time. The ELISA is a screening test and if it comes back positive, a Western blot will need to be done. Non-reactive is a good thing to be and it does mean that you are negative for HIV virus. Although there is a window period when you can have the HIV virus but still have a nonreactive result. Another test may be needed in that case. Suerte ...Read more

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Hi doctor I just have question 14 weeks from elisa test antibody hiv-1and hiv2 was negative is that conclusive and I tested also oraquick came up negative as well. Do I need further testing?

Hi doctor I just have question 14 weeks from elisa test antibody hiv-1and hiv2 was negative is that conclusive and I tested also oraquick came up negative as well. Do I need further testing?

Both are conclusive: Since the ELISA included HIV2 as well as HIV1, it is a "third generation" antibody test. Those tests are virtually 100% conclusive by 6-8 weeks after exposure. (No need to wait 3 months; that's old news.) The Oraquick oral fluids test is conclusive by 3 months. Therefore, your tests are definitive and prove you don't have HIV, assuming no more recent exposures. You don't need any more tests. ...Read more

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What diseases can I have after a positive antinuclear antibodies test result?

What diseases can I have after a positive antinuclear antibodies test result?

Any one: Depending on the concentration/titer of the antibody, it may be a false positive if it is low titer; if the titer is high it may portend an auto-immune disease like lupus or arthritis. However the person with ANA is still susceptible to all other diseases that affect other people with similar genetic background and environment. ...Read more

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What are the possible diagnosis's associated with a positive antinuclear antibodies test result?

What are the possible diagnosis's associated with a positive antinuclear antibodies test result?

Numerous: Thyroid disease, chronic infections including tb/viral hepatitis, subacute bacterial endocarditis, malignancies, any of the auto-immune or connective tissue disease, multiple sclerosis and patients with silicone breast implants. ...Read more

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Is it possible for the herpes antibodies test result to come out after 10 minutes of getting the blood sample?

Not likely: Conventional antibody tests take about an hour to complete and Labs usually take a day or longer depending on the schedule for testing. ...Read more

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I have a test result of 1.8 for carcinoembryonic antigen, what does this mean? The test was one of many to apply for life insurance policy.

Carcinoembryonic: Carcinoembryonic antigen (cea) can be measured in the blood (plasma) and the normal range is usually reported as less than 2.5 ng/ml or less than 2.5 micrograms/liter. For smokers the normal cut off is 5 ng/ml. Age, infection, inflammation and some cancers can elevate the CEA level. ...Read more

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Is an antinuclear antibody blood test result of 1.32 low, medium, or high? Is it something to worry about?

Is an antinuclear antibody blood test result of 1.32 low, medium, or high? Is it something to worry about?

If 1:320, high-ish: Anas are reported as a ratio of how dilute the serum is when the antibody is still detectable, and the lowest ratio reported is usually 1 to 40, written 1:40. Meaning if you dilute the serum 40 fold, you can still find antibody. The next reading is 1:80, then 1:160, then 1:320. The number you write looks like it could be 1:320. That's a significant amount and might cause symptoms. Make appt w doc. ...Read more

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Test result: CMV antibody IgG 38, it also states "current vs. Prior exposure unclear" why is it unclear? Am I contagious or not? Feel achy and ill

Need IgM test: It's unclear because IgM levels are needed to determine recent vs. Prior infection.
A negative (CMV) IgM results suggest that the patient is not experiencing a recent infection.
Positive CMV IgM results indicate a recent infection (primary, reactivation, or reinfection)
Positive CMV IgG indicate past or recent CMV infection. May transmit to susceptible individuals through blood and tissue product ...Read more

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Is it safe for me to carry a babyif I have a high thyroid peroxidasc antibody test result?

Why not?: I don't see any reasons why you should not carry a baby providing that you are healthy enough to carry one. High thyroid peroxidase antibody is associated with autoimmune thyroiditis. It is not infectious and should not transmit to the baby. ...Read more

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Deciphering a thyroid hormone test result: is an antithyroglobulin antibody titer of 1:50 too high, or is it alright?

Deciphering a thyroid hormone test result: is an antithyroglobulin antibody titer of 1:50 too high, or is it alright?

It depends: Antithyroglobulin antibody is not a thyroid hormone test. It tells you nothing about the function of your thyroid. It can indicate that you have autoimmune thyroid disease, but your level is not very high. Mild elevations are non-specific and occur more commonly in the population as we get older. Thyroid function is indicated by t4, tsh, and T3 (liothyronine) levels. ...Read more

Antibody (Definition)

An antibody is a protein the body's immune system makes to identify potentially harmful substances in the body. Antibodies attach to the substance on a molecular level and mark it so the immune ...Read more


Elisa (Definition)

Enzyme-linked immunosorbent assay (elisa) is a test that uses antibodies and color change ...Read more