Hepatitis B Surface Antibody Igg
Test Number: 3611850 Test Description
The reported index results are traceable to the World Health Organization Hepatitis B Immunoglobulin 1st International Reference Preparation. An Index value of 1.00 is equivalent to 10mIU/mL of HBsAb. The CDC guidelines indicate that an accepted criteria for immunity to HBV is HBsAb activity of > /= 10mIU/mL :1-26) or an index value of > /= 1.00. The system reports the HBsAb antibody activity as reactive or non-reactive along with the Index value.
Reactive > /= 1.00 Index Value or > /= 10 mIU/mL Have Protective Immunity < 1.00 Index Value or < 10 mIU/mL Does Not Have Protective Immunity) Test Notes It should be noted that the assay performance characteristics of the HBsAb assay has not been established for either immunocompromised, immunosuppressed patients or on cord blood specimens from neonates, infants, or children less than 12 years age.
Who Should Get A Hepatitis C Screening
If youre under 18, you may or may not need a parents or guardians consent to get tested. State laws on minor consent for medical care vary. If youve been exposed to hepatitis C or feel that you need a test for any reason, dont let your age stop you from getting the medical help you need.
If left untreated, hepatitis C can have serious consequences for your health. If you test positive, you can also pass the virus onto others.
The recommends universal hepatitis C screening for:
- all adults aged 18 and over
- pregnant people
False Reactive Test Results
What if I have a false reactive test result?
Every donation given to Canadian Blood Services is tested for infectious diseases caused by the hepatitis viruses B and C, HIV, syphilis and another uncommon virus called HTLV .
A false reactive test result means your initial screening test was reactivein other words, suggested the presence of something that would prevent you from donating bloodand a more precise follow-up test was negative. Almost all false reactive results occur because of interference with a test and are not necessarily due to testing positive for an infection.
How does Canadian Blood Services test blood?
We follow a two-stage testing method that is used in laboratories worldwide. In the first stage, a sensitive screening test looks for the possible presence of infection. If the screening test shows no reaction, the blood is considered free of infection and no further testing is done. However, if the screening test is reactive, further testing is done to sort out whether the reactive result was due to an infection in the blood or interference with the test. The second test identifies markers in the blood that are found only when infection is present.
Do I need to go to my doctor for repeat testing?
Yes. Repeat testing should be discussed with your doctor because he/she is in the best position to offer you personal medical advice.
Do my partner, children, or friends need to worry if I’ve had a false reactive result?
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Treatment Options For Hepatitis B
Acute hepatitis B usually doesnt require treatment. Most people will overcome an acute infection on their own. However, rest and hydration will help you recover.
Antiviral medications are used to treat chronic hepatitis B. These help you fight the virus. They may also reduce the risk of future liver complications.
You may need a liver transplant if hepatitis B has severely damaged your liver. A liver transplant means a surgeon will remove your liver and replace it with a donor liver. Most donor livers come from deceased donors.
The Treatment Programs Role In The Screening Process
Medical staff members at substance abuse treatment programs might assume the primary role for screening individuals for and explaining the screening process and test results. Opioid treatment programs with medical staff members should screen for and C at intake and periodically as indicated. In programs without onsite medical staff, clients may be referred elsewhere for screening with minimal involvement of the substance abuse treatment program.
Regardless of the type of program, counselors should have a basic understanding of the importance of screening, the screening process, and the meaning of the results. Counselors can encourage clients referred for screening to follow through and complete the screening and evaluation process . Clients might feel anxious about being diagnosed with hepatitis, and they might delay or avoid getting screened.
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What Do Hepatitis B Test Results Mean
Hepatitis B test results help determine if HBV infection is negative or positive, and if positive, whether the infection is acute or chronic, or if recovery is complete. A combination of results are considered to identify and classify HBV infection status.
The following are some interpretations of hepatitis B test results:
Table: Hepatitis B test results and interpretations
What Is A Hepatitis B Surface Antibody Test
Hepatitis B surface antibody test is part of a panel of blood tests to diagnose HBV infection. Hepatitis B surface antibody test determines the presence and quantity of anti-HBs in the blood serum, which can indicate protection from HBV infection.
Hepatitis B disease affects the liver and commonly spreads through body fluids such as blood, semen, and vaginal secretions.
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What Is The Difference Between Negative And Non
Nonreactive vs. A nonreactive result means that the fluid sample did not contain HIV antigens or antibodies that the test aims to react to at the time of testing. It can mean a person has tested negative for HIV. Instead, it could mean they took the test too early to detect HIV antigens or antibodies.
Why Do I Need This Test
You may need this test if your healthcare provider suspects you have a liver infection caused by HBV. You may also need this test if you have symptoms of hepatitis B. Symptoms usually start slowly. Many people have no symptoms or only feel like they have a mild case of the flu. You may not have symptoms until the infection is chronic or severe.
The most common symptom is extreme tiredness. Other symptoms may include:
Swelling and confusion. This is in extreme cases.
You may also have this test if you have a history that puts you at risk for being in contact with the virus. Risk factors for hepatitis B infection include:
Having sex with someone infected with the virus
Living in close contact with someone who has the virus
Being a man who has sex with men
Being a child born to a mother who has the virus
Sharing needles for intravenous, or IV, drug use
Working in a healthcare center where you are exposed to blood
Getting a blood transfusion or organ transplant. This is less common with active screening.
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Discusses Conditions That May Cause Diagnostic Confusion Including Improper Specimen Collection And Handling Inappropriate Test Selection And Interfering Substances
Individuals who have received blood component therapies , plasma, or intravenous immunoglobulin infusion) in the previous 3 to 6 months may have false-positive hepatitis B surface antibody results due to passive transfer of anti-HBs present in these products.
Individuals possessing IgM anti-rubella virus may have falsely high results with the VITROS Anti-HBs quantitative test.
Anti-HBs levels from past hepatitis B or hepatitis B virus vaccination may fall below detectable levels over time.
A positive anti-HBs result does not exclude infection by another hepatitis virus.
Performance characteristics have not been established for the following specimen characteristics:
-Containing particulate matter
Counseling Practices That Educate Support And Motivate Clients Undergoing Screening
Clients might need help deciding whether to get screened, understanding the test results, and determining their next steps. Even when services offered through the substance abuse treatment program are limited, discussing testing with clients presents an opportunity for counselors to motivate clients for change by confronting substance use and by making choices that improve their overall health. However, this may also be true when services are offered on-site through substance abuse treatment programs. A study at one methadone clinic that offered hepatitis screening and vaccination revealed that although the majority of clients completed screening , only 54.7 percent of clients who lacked for hepatitis A received vaccinations and only 2.9 percent of clients who lacked immunity for received vaccinations .
The Consensus Panel makes the following general recommendations while recognizing that, in some programs, the counselors role may be limited:
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Can A Hsv 2 Blood Test Be False Positive
The HSV 2 blood test has also been known to create false positive results from time to time. If this blood test is positive, but you do not have any known genital herpes outbreaks, did not have a positive culture test, and did not have a positive PCR result, then an immunoblot test may be necessary to confirm a diagnosis.
Provides Information To Assist In Interpretation Of The Test Results
A positive result indicates recovery from acute or chronic hepatitis B virus infection or acquired immunity from HBV vaccination. This assay does not differentiate between a vaccine-induced immune response and an immune response induced by infection with HBV. A positive total antihepatitis B core result would indicate that the hepatitis B surface antibody response is due to past HBV infection.
Per assay manufacturer’s instructions for use, positive results, defined as anti-HBs levels of 12.0 mIU/mL or greater, indicate adequate immunity to hepatitis B from past hepatitis B or HBV vaccination. However, per current CDC guidance, individuals with anti-HBs levels greater than 10 mIU/mL after completing an HBV vaccination series are considered protected from hepatitis B.
Negative results, defined as anti-HBs levels of less than 5.0 mIU/mL, indicate a lack of recovery from acute or chronic hepatitis B or inadequate immune response to HBV vaccination. The US Advisory Committee on Immunization Practices does not recommend more than 2 HBV vaccine series in nonresponders.
Indeterminate results, defined as anti-HBs levels in the range from 5 to 11.9 mIU/mL, indicate inability to determine if anti-HBs is present at levels consistent with recovery or immunity. Repeat testing is recommended in 1 to 3 months.
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Getting Tested For Hepatitis C
A blood test, called an HCV antibody test, is used to find out if someone has ever been infected with the hepatitis C virus. The HCV antibody test, sometimes called the anti-HCV test, looks for antibodies to the hepatitis C virus in blood. Antibodies are chemicals released into the bloodstream when someone gets infected.
Test results can take anywhere from a few days to a few weeks to come back. Rapid anti-HCV tests are available in some health clinics and the results of these tests are available in 20 to 30 minutes.
Educating Clients About Viral Hepatitis
Clients may believe they know about viral , but their understanding of the disease may not be accurate. It is easy to confuse the three main types of viral , B, and C. Clients may have formed impressions based on limited or incorrect information. Counselors should briefly describe hepatitis A, B, and C, including their prevalence, , and relationship to drug use, as well as to other infections, such as HIV and sexually transmitted diseases. Specific strategies for speaking with clients include:
- Speak clearly and keep the message simple, focused, and brief.
- Use language, examples, and concepts that the client understands.
- Use appropriate visual aids.
- Frame numerical statements in terms that are easy to visualize. Say 5 out of 100 people rather than 5 percent of the population say more than half instead of the majority.
- Repeat the information at different times in different ways. The average client retains only approximately one-third of what he or she is told. Summarize essential points.
- Pay attention to a clients response to the information. For example, if a client stiffens his or her posture, consider saying, I notice that this topic seems to make you uncomfortable. It does for a lot of people. Please tell me what youre feeling right now. Id really like to help you with this.
- Use the opportunity to describe the potential detrimental effects of alcohol and other substance use on the liver of a person who is infected with HCV.
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Taking A Hepatitis B Test
Testing for hepatitis B is performed on a sample of blood. A doctor, nurse, or other health care provider can obtain a blood sample using a small needle to draw blood from a vein.
At-home hepatitis B testing requires that users carefully follow instructions provided in the test kit to collect a small sample of blood, package the sample, and mail it to a lab for testing.
What Is Hepatitis B Surface Antibody
When you are exposed to hepatitis B, your body mounts an immune reaction against it as an invader. This happens whether you are exposed due to blood or sexual contact or if you are vaccinated with the hepatitis B vaccine.
The hepatitis B virus has proteins on its surface that cause your immune system to produce antibodies. With the vaccine, the sample contains the protein only and not the virus itself.
The first response your body will make when exposed to hepatitis B is to manufacture hepatitis B IgM antibodies. These early antibodies are produced to fight against several parts of the virus including its core. These antibodies are seen in the initial response, but they eventually fade away.
Your immune system then begins to produce IgG antibodies. It continues to produce these antibodies for the rest of your life. In this way, your immune system is always ready to attack hepatitis B virus when it is exposed to it.
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Negative But Other Hepatitis Tests Are Positive
Your HBsAb test may be negative even when other hepatitis B tests are positive, showing active or chronic infection. Further testing is necessary, especially for the hepatitis B surface antigen , which shows that the virus itself is circulating in your bloodstream and that you have an active or chronic infection.
What Does A Positive Blood Test For Hsv Mean
This result though is very rare. For a test value from 1.10 IV or greater, the results indicate positive results for HSV-1, that is, the presence of IgG antibodies detected in HSV-1 glycoprotein G. This results may show a past or a current HSV-1 infection. In some blood test, clarity is not seen when testing for HSV.
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What Does It Mean When You Are Hbsag Positive And Hbeag Negative
In HBV carriers and patients with chronic hepatitis B, positive HBeAg results usually indicate presence of active HBV replication and high infectivity. A negative HBeAg result indicates very minimal or no HBV replication. Positive anti-HBe results usually indicate inactivity of the virus and low infectivity.
When Should I Get Hepatitis B Testing
Using hepatitis B tests to screen for HBV is recommended for certain groups that are at an increased risk of infection. Groups that may benefit from hepatitis B screening include:
- Pregnant people
- People born in parts of the world where hepatitis B is more common, including Africa, Asia, Eastern Europe, South America, and parts of the Middle East
- People who didnt receive a hepatitis B vaccine
- HIV-positive people
- Pain in the joints or abdomen
- Loss of appetite, nausea, or vomiting
- Yellowish skin and eyes
Using hepatitis B testing to assess immunity to HBV may be used before or after vaccination. Pre-vaccination testing is not always needed but may be performed if there is a chance that a patient has previously been infected with HBV or has already been vaccinated. Post-vaccination testing is used in certain groups of people who are at an especially elevated risk for HBV infection, including infants born to mothers with a hepatitis B infection.
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Clinical Information Discusses Physiology Pathophysiology And General Clinical Aspects As They Relate To A Laboratory Test
Hepatitis B e antigen is a small polypeptide that exists in a free form in the serum of individuals during the early phase of hepatitis B infection, soon after hepatitis B surface antigen becomes detectable. Serum levels of both HBeAg and HBsAg rise rapidly during the period of viral replication. The presence of HBeAg in serum correlates with hepatitis B virus infectivity, the number of infectious virions, and the presence of HBV core antigen in the infected hepatocytes.
During recovery from acute hepatitis B, HBeAg level declines and becomes undetectable in the serum, while hepatitis B e antibody appears and becomes detectable in the serum. Anti-HBe usually remains detectable for many years after recovery from acute HBV infection.
In HBV carriers and patients with chronic hepatitis B, positive HBeAg results usually indicate presence of active HBV replication and high infectivity. A negative HBeAg result indicates very minimal or no HBV replication. Positive anti-HBe results usually indicate inactivity of the virus and low infectivity. Positive anti-HBe results in the presence of detectable HBV DNA in serum also indicate active viral replication in these patients.
What Do My Test Results Mean
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your healthcare provider.
Normal results are negative or nonreactive, meaning that no hepatitis B core IgM antibodies were found.
If your test is positive or reactive, it may mean you are actively infected with HBV. In most cases this means that you will recover within 6 months. If you recover, you will have immunity from the virus and will not be able to pass the virus to others. If you don’t recover in 6 months, the virus may stay in your blood, cause liver problems, and can infect others. Your healthcare provider may give you medicines if you don’t recover after 6 months.
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