About the Viral STD Panel
Purpose of the test
This panel detects sexually transmitted viral infections that often cause no initial symptoms. Most people with herpes, early-stage HIV, or hepatitis C don’t know they have it. Testing is the only reliable way to find out.
The panel covers HIV, herpes (HSV-1 and HSV-2), hepatitis A, hepatitis B, and hepatitis C. Early detection matters because these infections can lead to liver damage, immune system breakdown, and transmission to a baby during pregnancy or delivery. Some viral STIs, such as hepatitis C, are curable with current treatments; hepatitis A tends to clear on its own; others are not curable but respond to treatment that controls the infection.
This panel doesn’t screen for bacterial or parasitic STIs. Chlamydia, gonorrhea, syphilis, and trichomoniasis need a different or broader panel.
The panel serves two purposes:
- Screening: The CDC recommends regular viral STD screening for sexually active adults at higher risk, including those with new or multiple partners, and universal HIV and hepatitis C screening for all adults at least once.
- Diagnosis: Ordered when you’ve had a possible exposure or want to know your status for infections that often show no signs.
What does the viral STD panel measure?
This panel runs six blood-based tests from a single sample at a Clinical Laboratory Improvement Amendments (CLIA)-certified lab.
Other Markers
- HIV 4th-Generation Antigen/Antibody Test: Detects both HIV-1 and HIV-2 antibodies plus the p24 antigen, catching infection earlier than older antibody-only tests.
- Herpes Simplex Virus Type 1 IgG Antibody (HSV-1): Detects IgG antibodies to HSV-1, showing past exposure, most often linked to oral herpes.
- Herpes Simplex Virus Type 2 IgG Antibody (HSV-2): Detects IgG antibodies to HSV-2, showing past exposure most often linked to genital herpes.
- Hepatitis A IgM Antibody: Detects IgM antibodies that appear during a recent or active hepatitis A infection.
- Hepatitis B Surface Antigen (HBsAg): Detects the earliest blood marker of hepatitis B, screening for both new and chronic infection.
- Hepatitis C Antibody (Anti-HCV): Detects antibodies to the hepatitis C virus, showing whether you’ve been exposed at any point.
One thing to know about hepatitis C: a reactive antibody result doesn’t confirm active infection, but it means you were exposed to the virus at some point in your life. If your result comes back reactive, the lab runs a follow-up HCV RNA (PCR) test on the same sample to check for active virus. A positive RNA result confirms current infection. A negative RNA result means the infection likely cleared on its own.
When should I get a viral STD panel?
Consider testing if any of these apply:
- Possible exposure to HIV, herpes, or hepatitis through sexual contact
- Unprotected sex with a new or unknown partner
- A sexual partner recently diagnosed with a viral STD
- Current or past injection drug use (a route for hepatitis B and C)
- A current pregnancy (hepatitis B and C screening is recommended)
- Multiple sexual partners or inconsistent condom use
- No prior viral STD testing despite being sexually active
For routine screening, the U.S. Preventive Services Task Force and the CDC recommend:
- All adults and adolescents aged 13 to 64: HIV screening at least once; more often with new partners, inconsistent condom use, or injection drug use
- Pregnant women: HIV, hepatitis B, and hepatitis C screening at the first prenatal visit
- Adults 18 and older: Hepatitis C screening at least once; pregnant women at each pregnancy
- Gay, bisexual, and other men who have sex with men (MSM): HIV screening at least annually; hepatitis B and C screening based on risk
- Anyone diagnosed with HIV: Hepatitis B and C screening at the first HIV evaluation
How It Works
How to get tested
This panel is ordered through a healthcare provider, clinic, or hospital lab. CLIA-certified labs, including LabCorp and Quest Diagnostics, can process the samples. A provider orders the panel, you visit a nearby patient service center for a blood draw, and results are typically ready within one to two business days after the lab receives the sample, though timing can vary by lab.
No urine sample, swab, or physical exam is involved. It’s one blood draw.
Prefer to test privately from home? Several infections in this panel are included in an at-home STD test. At-home kits include instructions, collection materials, and prepaid shipping, with results delivered through a secure online portal.
Before the test
No fasting required. Eat and drink normally.
A few practical things to do beforehand:
- Drink plenty of water before your visit. Good hydration makes your veins easier to find.
- Wear a short-sleeved or loose-fitting shirt so the phlebotomist can reach your arm easily.
- Tell the staff if you tend to feel lightheaded during blood draws. They can have you lie down.
No medication restrictions apply. Serology-based tests aren’t affected by most common medications. If your provider gave you specific instructions, follow those instead.
During the test
Here’s what happens:
- Arrive at the patient service center and check in with a photo ID and your order confirmation.
- A phlebotomist draws blood from a vein in your arm. You’ll feel a brief pinch. The draw takes a few minutes.
- A small bandage covers the site. Keep it on for at least 15 minutes to ensure bleeding has stopped.
- You’re free to leave right after. No recovery time needed.
The full visit runs 15 to 30 minutes. Some people feel briefly lightheaded after a blood draw. That’s normal. Sit for a few minutes and drink some water if you need to.
Call the lab or your provider if you notice lasting pain, swelling, or bruising that worsens over the next day or two.
After the test
Results are typically ready within one to three business days after the lab receives your sample, though timing can vary by lab. You’ll get them through your ordering provider’s patient portal or office.
Some providers send an alert if any result needs prompt attention. If you haven’t heard back after three business days, check your portal or call the provider’s office.
What Do My Results Mean?
Results come back separately for each infection. You’ll see a positive or negative (or reactive/non-reactive) result for each of the six components, not one combined result.
If your results are negative
Your blood showed no evidence of that infection. That’s good news, but timing matters.
If you tested within the window period for any component, a negative result may not yet reflect a recent infection:
- HIV: The CDC’s HIV testing guidance notes that the 4th-generation test detects infection 18 to 45 days after exposure. A negative result before 90 days doesn’t rule out a recent infection.
- Herpes IgG: Antibodies can take up to 12 weeks to develop. A negative result shortly after first exposure may need repeating.
- Hepatitis C antibody: If exposure was very recent, antibodies may not be present yet.
If exposure was confirmed and recent, retest after the window has passed. Your provider can advise on timing.
If your results are positive
A positive result means that an infection was detected. Follow-up with a provider is needed. Here’s what each positive result may mean:
HIV: A reactive result triggers a confirmatory HIV-1/HIV-2 differentiation test on the same sample. HIV responds well to antiretroviral therapy (ART). When suppressed to undetectable levels, HIV can’t be transmitted sexually. This is known as U=U (Undetectable = Untransmittable).
Herpes IgG (HSV-1 or HSV-2): A positive result shows past exposure, not necessarily an active outbreak. It doesn’t tell you when you were infected. HSV-1 results at low index values can sometimes be false positives, so talk with your provider. The CDC’s herpes fact sheet explains how IgG testing is interpreted in clinical practice.
Hepatitis A IgM: A reactive result may mean a recent or active hepatitis A infection. Most people recover fully without treatment. Contact your provider about managing symptoms and preventing spread.
Hepatitis B (HBsAg reactive): This may mean a current hepatitis B infection, either acute or chronic. Your provider will order follow-up hepatitis B testing to figure out the stage and discuss treatment. Vaccination prevents hepatitis B, but can’t treat an existing infection.
Hepatitis C antibody (reactive): A reactive antibody result alone doesn’t confirm active infection. The lab runs a follow-up HCV RNA test on the same sample. If RNA is positive, active infection is confirmed. According to the Mayo Clinic, modern antiviral medicines cure more than 95% of chronic hepatitis C cases. If the RNA test is negative, the infection has likely cleared on its own.
If any result is positive, notify recent sexual partners so they can get tested too.
FAQs
Does this panel test for chlamydia, gonorrhea, or syphilis?
No. The viral STD panel screens only for virus-causing infections: HIV, herpes, and hepatitis A, B, and C. Chlamydia, gonorrhea, syphilis, and trichomoniasis are bacterial or parasitic and need a separate panel. If you want to cover both viral and bacterial STIs in one visit, ask about a comprehensive STD panel or a 10-panel STD test.
Can I have herpes and still test negative on this panel?
Yes. The herpes test uses a herpes IgG antibody blood test, which detects past exposure, not an active outbreak. If you were recently exposed for the first time, IgG antibodies can take up to 12 weeks to develop. If you have active sores, a swab test from the sore is more accurate for detecting a current outbreak.
Does a positive hepatitis C antibody result mean I have an active infection?
No. A reactive hepatitis C antibody result means you were exposed at some point, but it doesn’t confirm current infection. The lab runs a follow-up HCV RNA test on the same sample. If the RNA test is negative, the infection may have cleared on its own. If positive, active infection is confirmed, and treatment is available.
Can viral STDs be passed during pregnancy?
Yes. HIV, hepatitis B, and hepatitis C can all pass from parent to baby during pregnancy or delivery, as described in MedlinePlus guidance on STIs in pregnancy. If the genital herpes virus in present in the birth canal during delivery, it can be passed on to the baby. Screening early in pregnancy lets providers take steps to lower transmission risk. If you’re pregnant and haven’t been screened, ask about testing at your first prenatal visit.
Is the herpes test in this panel the same as a test for active sores?
No. The blood test for herpes IgG antibody checks for past exposure to HSV-1 and HSV-2. It doesn’t detect an active outbreak. If you have visible sores, a provider can swab the sore directly for more accurate detection. The blood test and the swab test serve different purposes.
I'm pregnant. Can I pass an STD to my baby?
Yes. HIV, herpes, hepatitis B, and hepatitis C can all be transmitted during pregnancy or delivery. Many STDs can cause serious problems for the baby, including early delivery and long-term health issues. Get tested as early in pregnancy as possible, and contact your provider right away if any result comes back positive.
