Hepatitis B and HPV screening issues?
Hello Doctor: Recently, I engaged in high-risk behavior (unprotected oral sex with a female) and would like to get tested for hepatitis B and C.
I found online that the window period for hepatitis B and C testing is between 3 to 6 months, but if I test for viral load, the window period can be shortened to approximately 3 weeks.
It has been almost 3 months now, and I would like to ask: 1.
I have heard that viral load can fluctuate and may sometimes be undetectable; is that true? 2.
Should I wait until the full 3 months to test for antigens and antibodies to rule out the risk of infection? Additionally, I came across information online stating that enzymes in saliva can inhibit HPV.
3.
Does this mean the risk of contracting HPV through oral sex is significantly lower? 4.
Are there many cases of oral HPV? 5.
After how long of an incubation period without symptoms is it considered safe?
Houhui, 20~29 year old female. Ask Date: 2023/08/11
Dr. Liao Zhongxin reply Internal Medicine
1.
If the window period has passed and there is an infection, it will definitely be detectable.
2.
If necessary, you can conduct self-testing or anonymous testing.
3.
For information regarding HPV, you can refer to the following resource: https://health.esdlife.com/shop/hk/contents/%E4%BA%BA%E9%A1%9E%E4%B9%B3%E9%A0%AD%E7%98%A4%E7%97%85%E6%AF%92hpv%E6%B8%AC%E8%A9%A6
Reply Date: 2023/08/11
More Info
When it comes to screening for Hepatitis B and C (BC Hepatitis) and understanding the risks associated with HPV after engaging in risky sexual behaviors, it is essential to have a clear understanding of the testing protocols, the nature of these viruses, and the implications of oral sexual practices.
1. Window Period for Hepatitis B and C Testing: The window period for Hepatitis B and C testing can indeed vary. For Hepatitis B, the window period is typically around 3 to 6 months, during which the virus may not be detectable even if a person is infected. However, if you are considering a viral load test (which measures the actual amount of virus in the blood), this can sometimes provide results sooner, often within 3 weeks. It is important to note that viral loads can fluctuate, and there is a possibility that a low viral load could lead to a false-negative result, especially if the test is done too early. Therefore, if you are approaching the three-month mark, it is advisable to get tested for both Hepatitis B and C using the appropriate tests (antigen/antibody tests).
2. Testing After Three Months: If you have reached the three-month mark since the risky behavior, it is generally recommended to undergo testing for Hepatitis B and C. A negative result at this point can provide a good indication that you are not infected, but it is always wise to consult with a healthcare provider for personalized advice based on your specific situation.
3. HPV Transmission via Oral Sex: Regarding HPV, it is true that saliva contains enzymes that can inhibit certain viruses, including HPV. However, this does not completely eliminate the risk of transmission. Oral sex can still pose a risk for HPV transmission, especially if there are cuts or sores in the mouth or throat. The likelihood of contracting HPV through oral sex is lower compared to vaginal or anal sex, but it is not negligible.
4. Prevalence of Oral HPV Cases: Oral HPV infections are indeed documented, and while they are less common than genital infections, they can occur. The prevalence of oral HPV is increasing, particularly among individuals who engage in oral sex with multiple partners. It is important to be aware that certain strains of HPV can lead to oropharyngeal cancers, making it crucial to practice safe sex.
5. Latency Period for HPV: The latency period for HPV can vary significantly. Many HPV infections are asymptomatic and can clear on their own within a couple of years. However, some strains can remain dormant for longer periods. If you have been exposed to HPV, it is advisable to monitor for any symptoms, but the absence of symptoms does not necessarily mean that you are free from infection. Regular screenings and consultations with a healthcare provider can help manage risks associated with HPV.
In summary, after engaging in risky sexual behavior, it is prudent to get tested for Hepatitis B and C after three months, and to discuss the results with a healthcare professional. For HPV, while the risk of transmission through oral sex is lower, it is still present, and awareness of oral HPV is important. Regular screenings and safe sexual practices are key to maintaining sexual health. If you have further concerns or symptoms, do not hesitate to seek medical advice.
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