Hepatitis B & C Screening: Who Should Include These in Their STI Profile?

Introduction

When arranging an STI screening, many people focus primarily on infections such as chlamydia, gonorrhoea, and HIV. Hepatitis B and C screening is sometimes overlooked, despite both viruses being capable of causing serious long-term liver damage when left undetected. Because hepatitis B and C often produce no obvious symptoms, individuals may carry an infection for years without realising.

It is important to understand that not every risk factor or symptom will be connected to hepatitis or any other sexually transmitted infection. Symptoms can have several possible causes, and many individuals with hepatitis B or C experience no noticeable signs at all. Hepatitis B and C screening can help provide clarity, particularly where there is a relevant history of exposure or certain risk factors.

Our clinic provides confidential STI testing services. We do not provide GP services or dermatology consultations, but we can advise on appropriate next steps if further medical care is needed.

Hepatitis B and C are liver infections that may be included in an STI profile depending on individual risk factors. Both can be transmitted through sexual contact or blood-to-blood exposure and may cause no symptoms for years. Because many carriers are unaware of their status, screening through a simple blood test may be the only reliable way to confirm or rule out infection.

Reasons hepatitis screening may be appropriate include:

• new or multiple sexual partners
• history of unprotected sexual contact
• exposure to blood or shared needles
• travel to regions with higher hepatitis prevalence
• no previous hepatitis B vaccination

Screening alone cannot diagnose or treat hepatitis — it identifies whether further assessment may be needed.

When Could Hepatitis B or C Be Relevant to Your STI Profile?

Hepatitis B and C screening becomes particularly relevant when there are identifiable risk factors in a person's history. Unlike many common STIs that primarily spread through genital fluids, hepatitis B is present in blood, semen, and vaginal fluids, whilst hepatitis C is predominantly a blood-borne virus with a lower but possible risk of sexual transmission.

Including hepatitis B and C screening in a broader STI profile may be sensible for individuals who have had contact with potentially infectious body fluids or who fall within certain higher-risk groups. Because symptoms can remain absent for months or even years, relying on how you feel is not a reliable indicator of infection status.

Understanding Hepatitis B and C

Hepatitis B

Hepatitis B is caused by the hepatitis B virus (HBV). It is highly infectious — considerably more so than HIV — and can be transmitted through blood, semen, vaginal fluids, and other body fluids. The virus can survive outside the body for up to seven days. Some adults will clear the infection naturally, whilst others may develop a chronic infection that can lead to liver cirrhosis or liver cancer if left unmanaged.

A vaccine is available for hepatitis B and has been part of the routine NHS childhood immunisation schedule since 2017. However, many adults may not have been vaccinated.

Hepatitis C

Hepatitis C is caused by the hepatitis C virus (HCV). It is primarily transmitted through blood-to-blood contact, though sexual transmission can occur, particularly during practices that carry a higher risk of minor bleeding or tissue trauma. There is currently no vaccine for hepatitis C, but effective antiviral treatments are available that can cure the infection in the majority of cases.

Both hepatitis B and C can cause acute illness in some individuals but may also become chronic without producing noticeable symptoms.

Common Non-STI Causes of Similar Symptoms

Some symptoms sometimes associated with hepatitis may also arise from entirely unrelated causes:

• Dietary factors — fatty foods, alcohol intake, or food intolerances may produce nausea or abdominal discomfort
• Stress and anxiety — particularly common following a concerning sexual encounter
• Other viral infections — influenza, gastric viruses, and glandular fever may cause fatigue and malaise
• Medication side effects — certain medications can temporarily affect liver function
• Hormonal changes — may contribute to tiredness, appetite changes, or digestive discomfort

Symptoms alone cannot confirm hepatitis infection. In many cases, these complaints resolve without medical intervention.

Situations Where Hepatitis-Related Symptoms May Appear

Early hepatitis infection may sometimes produce flu-like symptoms including:

• fatigue and general malaise
• mild nausea or loss of appetite
• discomfort in the upper abdomen
• dark-coloured urine or pale stools
• yellowing of the skin or eyes (jaundice) in some cases

These symptoms can appear weeks or months after exposure and may also occur following periods of stress, dietary changes, or other infections. Because the overlap between hepatitis symptoms and common everyday complaints is considerable, testing remains the most reliable means of establishing whether infection is present.

Who Should Consider Including Hepatitis B and C in Their STI Screening?

Hepatitis B and C screening may be appropriate for individuals with certain risk factors. These include:

• Multiple or new sexual partners — particularly where barrier protection has not been used consistently
• Men who have sex with men (MSM) — hepatitis B and C prevalence is higher in this group
• History of injecting drug use — even if only on one occasion, sharing needles or equipment carries significant risk
• Occupational exposure — healthcare workers and others exposed to blood or sharps injuries
• Travel to high-prevalence regions — parts of sub-Saharan Africa, East Asia, Eastern Europe, and Central Asia have higher rates of hepatitis B and C
• Recipients of blood transfusions or medical procedures abroad — particularly before screening protocols were widely implemented
• Household contacts of someone with hepatitis B — the virus can be transmitted through shared personal items such as razors or toothbrushes
• Born to a mother with hepatitis B or C — vertical transmission is a recognised route
• Individuals with HIV or another STI — co-infection with hepatitis is not uncommon
• No prior hepatitis B vaccination — those who have not been vaccinated remain susceptible

Even in the absence of specific risk factors, some individuals may wish to include hepatitis screening for general reassurance as part of a comprehensive STI profile.

How Hepatitis Symptoms Can Overlap With Other Conditions

The early symptoms of hepatitis B and C — fatigue, nausea, mild abdominal discomfort — are shared by a wide range of common conditions. Stress, dietary changes, viral infections, and even changes in sleep patterns can produce similar complaints.

Jaundice, whilst more suggestive of liver involvement, can also occur in conditions unrelated to hepatitis, such as gallstones or certain medication reactions. Appearance alone cannot confirm infection, and many individuals with chronic hepatitis experience no symptoms whatsoever.

This overlap reinforces why hepatitis B and C screening through blood testing is the most reliable approach when there is reason to consider it. Symptoms and clinical history together help inform whether testing is appropriate.

When STI Testing May Be Sensible

Testing for hepatitis B and C, alongside other STIs, may be sensible in circumstances including:

• symptoms persist beyond what would be expected from a common illness
• a new sexual partner or recent change in sexual partners
• unprotected sexual contact has occurred
• a partner has been diagnosed with hepatitis or another STI
• symptoms such as unexplained fatigue, nausea, or jaundice are worsening
• there has been potential blood-to-blood exposure

A balanced approach to testing considers both symptoms and exposure history. Not every situation will require hepatitis screening, but where relevant risk factors exist, it may provide valuable clarity.

How Hepatitis B and C Testing Works

Hepatitis B and C are both detected through STI blood testing. The process is straightforward and confidential.

• Hepatitis B surface antigen (HBsAg) — detects current hepatitis B infection. This test is typically reliable from around four to six weeks after exposure.
• Hepatitis B surface antibody (anti-HBs) — indicates immunity, either from vaccination or previous cleared infection.
• Hepatitis C antibody test — detects whether the body has produced antibodies to hepatitis C. A positive result may indicate current or past infection and may require a confirmatory test. The recommended testing window is up to 12 weeks after exposure.

Samples are sent to an accredited laboratory for analysis, and results are returned confidentially. If a result is reactive or positive, guidance on appropriate next steps is provided, which may include referral to a specialist hepatology or sexual health service.

For those considering a broader assessment, hepatitis B and C can be included alongside other commonly tested infections. It is also worth noting that some STIs, such as trichomoniasis, are sometimes omitted from standard screening panels and may need to be requested separately.

When Symptoms Are Less Likely to Be Related to Hepatitis

In many cases, symptoms that prompt concern about hepatitis will have straightforward explanations:

• temporary fatigue following illness, poor sleep, or stress
• nausea linked to dietary changes or anxiety
• mild abdominal discomfort from digestive issues
• changes in urine colour related to hydration levels

Where symptoms are mild, short-lived, and occur without identifiable exposure to hepatitis risk factors, the likelihood of hepatitis infection is considerably lower. However, because hepatitis B and C can be asymptomatic, the absence of symptoms does not guarantee the absence of infection — which is why screening based on risk factors, rather than symptoms alone, is the recommended approach.

Frequently Asked Questions

Is hepatitis B or C always sexually transmitted?

No. Hepatitis B can be transmitted sexually but also through blood-to-blood contact, shared personal items, and from mother to child. Hepatitis C is primarily a blood-borne infection, with sexual transmission being less common but possible.

Can I have hepatitis B or C without symptoms?

Yes. Many individuals with hepatitis B or C experience no symptoms, sometimes for years. This is one of the key reasons screening may be appropriate for those with relevant risk factors.

Should I include hepatitis in my STI screen if I have no symptoms?

Screening decisions are best guided by risk factors and exposure history rather than symptoms alone. If you have identifiable risk factors, hepatitis B and C screening may be worthwhile even in the absence of symptoms.

How soon after exposure can hepatitis B and C be detected?

Hepatitis B testing is generally reliable from around four to six weeks after potential exposure. Hepatitis C testing is recommended at up to 12 weeks after exposure for the most accurate result.

Is there a vaccine for hepatitis B or C?

A highly effective vaccine exists for hepatitis B. There is currently no vaccine for hepatitis C, although the infection is curable with modern antiviral treatment.

Are hepatitis B and C curable?

Hepatitis C can be cured in the majority of cases with direct-acting antiviral medication. Hepatitis B may clear naturally in some adults, though chronic infection requires ongoing monitoring and, in some cases, antiviral therapy.

When to Seek Medical Advice

Whilst many hepatitis-related concerns can be addressed through screening, certain situations may warrant prompt medical attention:

• persistent or worsening fatigue that does not improve with rest
• yellowing of the skin or whites of the eyes
• severe nausea, vomiting, or abdominal pain
• dark urine accompanied by pale stools
• unexplained weight loss
• fever with no identifiable cause

If symptoms persist or worsen, consultation with an appropriate healthcare service may be advised. A GP or specialist hepatology service can provide further assessment and, where necessary, treatment.

Confidential STI Testing in the UK

If you are concerned about hepatitis B or C exposure or wish to include hepatitis screening within your STI profile, confidential testing appointments are available at our UK clinic. Testing decisions depend on symptoms, exposure history, and individual risk factors. Our team can help guide which tests may be most appropriate for your circumstances.

*This article is for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. Sexual health concerns should be assessed based on individual circumstances. If you are experiencing persistent, severe, or worsening symptoms, consultation with an appropriate healthcare service is advised. Our clinic provides private STI testing services only.*