E antigen, Gastroenterology and Hepatology FAQ - Page 3

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Concerns About Hepatitis B Infection After Unprotected Sex: What You Need to Know

Inquire about the possibility of hepatitis B infection? I'm sorry, doctor. I keep asking you the same question. I had several instances of unprotected sexual intercourse between February and April, and I don't know the partner's medical history. I currently have no...


Dr. Chen Shidian Reply:
Hello: There is no need to worry about repeated inquiries if you have not been infected. Everyone's test results will not be zero; this is a matter of laboratory science and does not require further explanation. If you would like to receive the Hepatitis B vaccine, you can d...

[Read More] Concerns About Hepatitis B Infection After Unprotected Sex: What You Need to Know


Understanding Hepatitis B Window Period: Testing and Vaccination Insights

Is there a window period for Hepatitis B? I had unprotected sexual intercourse between the end of February and mid-April (not knowing the partner's medical history). On August 1st (more than 12 weeks later), I tested negative for both Hepatitis B surface antigen and Hepatiti...


Dr. Chen Shidian Reply:
Hello: There is no need to worry. If symptoms occur, you can seek medical examination again. Changhua Hospital cares about your health. Chen Shidian

[Read More] Understanding Hepatitis B Window Period: Testing and Vaccination Insights


Understanding Post-Hepatitis B Test Results: What You Need to Know

Questions After Hepatitis B Testing Hello Dr. Tsai: I underwent a hepatitis B test, and the results are as follows: (1) Test item: Anti HCV, Result: Negative (0.06) S/CO (2) Test item: HBc IgG (Hepatitis B core antibody), Result: Positive (3) Test item: HBs Ag (Hepatitis B surfac...


Dr. Cai Jinji Reply:
If one is not a carrier, the likelihood of having hepatitis B virus in the liver is relatively low (with very few exceptions). However, since there was a previous history of being a hepatitis B carrier, it indicates that there has been a liver condition in the past. Therefore, re...

[Read More] Understanding Post-Hepatitis B Test Results: What You Need to Know


Understanding Your Hepatitis B Test Results: Do You Need Further Monitoring?

Questions after Hepatitis B testing 2 Hello Dr. Lin: I previously underwent the following hepatitis B tests, and I have some questions regarding the test items and results: (1) Test item: Anti-HCV, result: Negative (0.06) S/CO; (2) Test item: HBc IgG (Hepatitis B core antibody), ...


Dr. Lin Minghui Reply:
Hello, the presence of surface antibodies indicates protection and can help combat hepatitis B infection. If someone is known to be a chronic hepatitis B carrier for many years and later develops surface antibodies (HBsAb), it does not necessarily mean that the hepatitis B infect...

[Read More] Understanding Your Hepatitis B Test Results: Do You Need Further Monitoring?


Understanding Your Hepatitis B Test Results: What Do They Mean?

Questions After Hepatitis B Testing Hello Dr. Lin: I underwent a hepatitis B test, and the test items and results are as follows: (1) Test item: Anti HCV, result: Negative (0.06) S/CO (2) Test item: HBc IgG (Hepatitis B core antibody), result: Positive (3) Test item: HBs Ag (Hepa...


Dr. Lin Minghui Reply:
Hello: The second hepatitis marker, IgG HBc, indicates whether there has been a past infection with hepatitis B. A positive result signifies a previous infection with hepatitis B, and if HBsAg is simultaneously negative, it indicates that the individual is not a carrier, meaning ...

[Read More] Understanding Your Hepatitis B Test Results: What Do They Mean?


Understanding High Hepatitis B Surface Antigen Levels: What You Need to Know

Elevated surface antigen levels? Hello Doctor: I am a carrier of hepatitis B. I started treatment with Baraclude in November 2014, and by May 2017, my e-antigen turned negative and e-antibody became positive. I continued the medication for another year and stopped in May 2018. Du...


Dr. Chen Shidian Reply:
Hello, sir. This indicates that there are still a significant amount of viruses present in the liver, producing surface antigens. Changhua Hospital is concerned about your health. Chen Shidian.

[Read More] Understanding High Hepatitis B Surface Antigen Levels: What You Need to Know


Understanding Your Hepatitis B Test Results: What Do They Mean?

Hepatitis B testing Hello Dr. Chen: My hepatitis B test report is as follows: Test Name: Blood Report Date: 1070518 Test Item: Anti HCV Result: Negative Unit: S/CO Standard (Low): 0.06 Standard (High): 1.0 Test Item: HBc IgG (Hepatitis B Core Antigen Antibody) ...


Dr. Chen Shidian Reply:
Hello, sir. As long as it is less than [the threshold], it is considered negative. Changhua Hospital cares about your health. Chen Shidian.

[Read More] Understanding Your Hepatitis B Test Results: What Do They Mean?


Understanding Hepatitis B Risks in Sexual Relationships: What You Need to Know

Engaging in sexual activity with a partner who has hepatitis B? My boyfriend is a chronic hepatitis B patient, and we have had sexual intercourse for several years, including several instances of unprotected sex. On April 28, I tested negative for hepatitis B surface antigens and...


Dr. Chen Shidian Reply:
Hello, it is advisable to avoid sexual contact to prevent the transmission of Hepatitis B (using condoms), especially since the female partner has a negative antibody test. It is recommended to receive an additional dose of the vaccine and then test for antibodies one month later...

[Read More] Understanding Hepatitis B Risks in Sexual Relationships: What You Need to Know


Understanding Non-Reactive Hepatitis B Surface Antigen Test Results

Hepatitis B testing Hello Dr. Tsai: May I ask if a Hepatitis B surface antigen test result of Non-reactive 0.44, which is less than the reference value of Non-reactive (<0.9), indicates a negative result (meaning no Hepatitis B)? Thank you!


Dr. Cai Anshun Reply:
Hello: Yes! A negative surface antigen means there is no hepatitis B. Changhua Hospital cares about your health. Dr. Tsai An-Shun.

[Read More] Understanding Non-Reactive Hepatitis B Surface Antigen Test Results


Do I Need Further Testing for Positive Hepatitis B Surface Antigen?

Positive reaction for Hepatitis B virus surface antigen? Hello: 1. During a health check, liver function tests were normal (106/10/06). 2. However, a blood donation screening showed a positive reaction for Hepatitis B surface antigen (106/11/13). Should I go to the gastroenterolo...


Dr. Chen Shidian Reply:
Hello, sir. You need to complete the full set of hepatitis B tests first, and then we will plan follow-up treatment based on the results. Changhua Hospital cares about your health. Chen Shidian

[Read More] Do I Need Further Testing for Positive Hepatitis B Surface Antigen?


Understanding Low Titer Anti-HBs: Implications for Hepatitis B Resistance

Low-titer hepatitis B antibodies, do they provide resistance against the hepatitis B virus? Hello: Recently, during a health check, tests for HBsAg and Anti-HBs [5.13; <10(-), >10(+)] were both negative, so I went to the hospital to receive the hepatitis B vaccine, but I wa...


Dr. Chen Shidian Reply:
Hello, sir. A blood serum test is sufficient. Changhua Hospital cares about your health. Chen Shidian.

[Read More] Understanding Low Titer Anti-HBs: Implications for Hepatitis B Resistance


Understanding High Viral Load Despite Negative e Antigen in Hepatitis B Patients

e antigen negative Hello, Doctor. I have hepatitis B. Previously, my liver inflammation caused my AST and ALT levels to exceed a thousand, with a viral load of over a million and positive e-antigen. An ultrasound showed a 0.6 cm nodule. After taking Baraclude, my e-antigen turned...


Dr. Chen Shidian Reply:
Hello, some patients with hepatitis B virus may undergo mutations to evade the immune system and relieve pressure, leading to the disappearance of the e-antigen, which allows the virus to continue replicating and causing liver inflammation. It is recommended that antiviral medica...

[Read More] Understanding High Viral Load Despite Negative e Antigen in Hepatitis B Patients


Understanding Positive Hepatitis B Test Results: Key Insights and Concerns

Hepatitis B testing issues? Hello Doctor, I am currently studying abroad. When I arrived here, I underwent a rapid screening for Hepatitis B, and the result was positive. I need to schedule another appointment with a local hospital for further testing. About two years ago, I rece...


Dr. Chen Shidian Reply:
Hello, sir. For patients who are positive for hepatitis B surface antigen (HBsAg), vaccination may not be effective, and they may not produce antibodies. Please confirm your hepatitis B carrier status and antibody levels with your physician. Changhua Hospital cares about your hea...

[Read More] Understanding Positive Hepatitis B Test Results: Key Insights and Concerns


Understanding Hepatitis B: What to Do After a Positive Surface Antigen Test

Could you please provide more details about the issue related to hepatitis B? Hello, I would like to ask about my situation. I tested negative for hepatitis B at the age of 32. Now, at 36, I came into contact with unknown blood on September 10 and got tested on September 13. Eigh...


Dr. Lin Minghui Reply:
Hello: The presence of Hepatitis B surface antigen (HBsAg) indicates an infection with Hepatitis B. It is important to monitor for any symptoms of hepatitis, as there is still a 1% risk of fulminant hepatitis in cases of acute Hepatitis B infection, so one should not be complacen...

[Read More] Understanding Hepatitis B: What to Do After a Positive Surface Antigen Test


Should You See a Doctor for Mild Liver Function Abnormalities?

Abnormal liver function detected during school health examination? SGOT 20, SGPT 42.3 (slightly elevated), Hepatitis B surface antigen negative, Hepatitis B surface antibody negative. Due to being in the third year of junior high school and staying up late, should I visit an inte...


Dr. Cai Anshun Reply:
Hello: GPT 42.3 is only slightly elevated, so there is no need to worry too much. You can return to the clinic for a follow-up blood test in three months. Changhua Hospital cares about your health. Dr. Tsai An-shun.

[Read More] Should You See a Doctor for Mild Liver Function Abnormalities?


Understanding Your Hepatitis B Test Results: What Do They Mean?

Hepatitis B testing status I am a carrier of hepatitis B and have regular follow-ups. Today, I had blood tests done with the following results: - 2017/10/03 AST/GOT (aspartate aminotransferase) 25 U/L (normal range: 8-38) - 2017/10/03 ALT/GPT (alanine aminotransferase) 24 U/L (...


Dr. Chen Shidian Reply:
Hello, based on your description, you have antibodies against Hepatitis B, indicating that the infection has completely resolved. If you have liver cirrhosis, close monitoring is still necessary. Changhua Hospital cares about your health. Chen Shih-Tien

[Read More] Understanding Your Hepatitis B Test Results: What Do They Mean?


Can Hepatitis B Antigen Turn Negative After Being a Carrier?

I am not vertically infected? I was tested for hepatitis B when I was 32 years old, and the lab technician said I had never been infected. Four years later, I was tested again and found to be a carrier of hepatitis B. If I go for another test in six months, is there a chance that...


Dr. Cai Anshun Reply:
Hello: If an adult contracts hepatitis B, there is a 90% chance of recovery, and only about 10% will become carriers. Changhua Hospital cares about your health. Dr. Tsai An-Shun.

[Read More] Can Hepatitis B Antigen Turn Negative After Being a Carrier?


Understanding Hepatitis B: Treatment Resistance and Monitoring

Recent hepatitis B screening? Hello Dr. Lin, I am a carrier of Hepatitis B. I have been on treatment with ETV (entecavir) for three years. In December and June of last year, my viral load was undetectable, but this June, the viral load was measured at 28. However, the E antigen, ...


Dr. Lin Minghui Reply:
1) Hepcludex is used for chronic hepatitis B, and the chance of developing drug resistance is very low. 2) GPT: 49 indicates elevated liver enzymes; besides hepatitis B, other possible causes such as medications, infections, or non-compliance with medication should be considered....

[Read More] Understanding Hepatitis B: Treatment Resistance and Monitoring


Understanding Fluctuations in Anti-HBs Levels After Hepatitis B Treatment

Hepatitis B Anti-HBs Value Issues Dear Dr. Chen, I hope this message finds you well. During a company health check in 2007, I was found to be a carrier of hepatitis B with elevated liver enzymes (approximately GOT over 800). After follow-up at National Taiwan University Hospital...


Dr. Chen Shidian Reply:
Hello, sir. The values obtained are not completely quantitative, so they should only be used for reference and should not be interpreted based on their magnitude. Changhua Hospital cares about your health. Chen Shidian.

[Read More] Understanding Fluctuations in Anti-HBs Levels After Hepatitis B Treatment


Should I Extend My Interferon Treatment for Chronic Hepatitis B?

Please inquire about the interferon treatment regimen for hepatitis B? Hello, I am a carrier of hepatitis B, with vertical transmission from my mother. A year ago, my GOT and GPT levels were about twice the normal values, which qualified me for health insurance coverage. I underw...


Dr. Chen Shidian Reply:
Hello, sir. Interferon treatment is typically standardized for one year, and extending the treatment is not recommended. After discontinuation, there may still be subsequent immune effects, so continued monitoring is necessary. On the other hand, if there is a severe hepatitis fl...

[Read More] Should I Extend My Interferon Treatment for Chronic Hepatitis B?


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