This page is general health information, not medical advice. It cannot tell you whether you have an infection. A clinician can, and the testing options on this site are a good place to start.

A full STD panel sounds simple: one visit, every test. In practice, there is no single standard list. What one clinic calls a full panel, another may call a basic screen. That is why the better question is not "which is better?" but "which tests match my situation?"

This guide walks through that decision in order. It is written for people in Boston, and it points to local places that can help you finish the job.

What "full panel" and "targeted" actually mean

A full STD panel usually means a bundle of tests ordered together. A common bundle includes HIV, syphilis, chlamydia, gonorrhea and often hepatitis C. Some bundles add trichomoniasis, hepatitis B or a herpes blood test.

Targeted testing means choosing tests based on your sexual history, the body sites involved, your symptoms, your partners and your health history. A clinician often helps build this list.

Neither approach is automatically right. A panel can be efficient. A targeted list can be more complete in some ways, because it can include tests a bundle leaves out, such as swabs from the throat or rectum.

What you need before you start

A rough timeline of your last few sexual contacts, including any condomless sex. Approximate dates are fine.
A note of the types of sex you have had (oral, vaginal, anal, shared sex toys), since this affects which body sites can be swabbed.
Your last test dates and results, if you have them.
A list of any symptoms, even mild ones, and when they started.
Your insurance card if you have one. Many Boston clinics can also see you without insurance.
Any questions about pregnancy, PrEP or vaccines.

Step 1: Start with the baseline tests most adults are advised to have

Some tests are recommended broadly, not only after a specific risk. The CDC recommends that everyone aged 13 to 64 be tested for HIV at least once. The CDC also recommends hepatitis C screening at least once for all adults 18 and older, and during each pregnancy.

If you have never had these two, they belong on your list no matter which approach you choose.

Step 2: Match tests to your age, anatomy and partners

The CDC STI Treatment Guidelines (2021) describe who is advised to screen for what, even without symptoms. In summary:

Sexually active women under 25: yearly chlamydia and gonorrhea screening. The CDC also advises it for older women with new or multiple partners, or a partner with an STI.
Gay, bisexual and other men who have sex with men: at least yearly testing for HIV, syphilis, chlamydia and gonorrhea. The CDC advises testing at each site of sexual contact, which can include the throat and rectum. More frequent testing, such as every 3 to 6 months, is advised for people at higher likelihood of exposure.
Transgender and gender diverse people: the CDC advises basing screening on current anatomy and sexual behavior, not on gender identity alone.
Pregnant people: the CDC advises screening for syphilis, HIV and hepatitis B early in pregnancy. A clinician may add more tests depending on your history.
People with new, multiple or concurrent partners, or a partner who has an STI: a broader list is reasonable to discuss with a clinician.

If you fit none of these groups, that does not mean a test is unwarranted. It means a conversation with a clinician is the best way to choose.

Step 3: Check which tests a panel would actually include

This is where many people get surprised. Ask what is in the bundle before you agree to it. Three points are worth checking:

Body sites. A urine test can look for chlamydia and gonorrhea in the genital tract. It does not check the throat or rectum. If you have had oral or anal sex, ask whether those swabs are included.
Herpes blood tests. These are often part of a full panel. The CDC does not recommend routine herpes blood testing for people without symptoms, and the USPSTF recommends against routine serologic screening for genital herpes in people without symptoms. These blood tests can return confusing results. If you are curious about herpes, or a partner has it, talk it through with a clinician first.
Trichomoniasis and hepatitis B. Some panels include them and some do not. Ask whether they fit your situation.

Step 4: Think about timing

Tests can miss a recent infection because the body needs time before a test can detect it. This is called the window period.

For HIV, the CDC says a lab-based antigen/antibody blood test can usually detect HIV 18 to 45 days after an exposure. Finger-stick antigen/antibody tests take longer, generally 18 to 90 days. The CDC lists other windows for antibody-only tests. For other infections, a clinician can tell you how soon after an exposure a test is useful.

If your last exposure was very recent, a clinician may suggest testing now and again later. That is a normal plan, not a sign something went wrong.

Step 5: Decide, using this simple guide

Choose a broad panel if you have not been tested in a while, have had several partners, are unsure of your history, or simply want one visit that covers the usual infections. Confirm the body sites and the items in Step 3.
Choose a targeted list if you are following up on a specific exposure, a partner's diagnosis, a known symptom, or a repeat check after treatment. A targeted list can also add tests a bundle misses.
Choose a clinician-built list if you are unsure. This often gives the best of both approaches, and it is available locally at no cost or a reduced cost.

Step 6: Pick a place in Boston and book

Boston has several options, and they differ on cost, walk-in access and who they serve. Our list of Boston testing clinics has the full picture. For a wider look at costs and how visits work, see our guide to STD testing in Boston, where to go and what it costs.

A few examples drawn from the clinics' own pages:

Boston STD Clinic at Boston Medical Center (725 Albany St., 9th Floor, Suite 9C; 617-414-2803). The clinic's page says routine testing for HIV, chlamydia, gonorrhea, syphilis and hepatitis C is free. Appointments are made by phone or MyChart. The page does not say whether walk-ins are accepted, so call first.
Fenway Health Sexual Health Clinic (1340 Boylston Street, 4th floor; 617-267-0159). Fenway's page lists walk-in hours on several days and appointments on Mondays, with results in 3 to 5 business days. The clinic bills insurance if you have it, and its page says uninsured patients can be seen free through grant funding. The page describes the clinic as open to gay, bisexual and other men who have sex with men, transgender and gender diverse people, and their partners.
TrueCare@MAC, Multicultural AIDS Coalition (9 Palmer Street, Roxbury; 617-442-1622). Its page lists free STD, HIV and hepatitis C testing, with or without an appointment.
X-Clinic at Codman Square Health Center (637 Washington St., Dorchester; 617-822-8350). It uses a sliding fee scale and accepts all insurance. Codman's pages list different hours, so call to confirm.

Hours change. Check with the clinic before you go. For general help finding a place, the Boston Public Health Commission's Mayor's Health Line (617-534-5050) offers free, confidential health information and referral.

Step 7: Say what you want at check-in

You do not need medical vocabulary. You can say, "I would like a full screen, and I want to review which tests are included." Or: "I had a partner who tested positive for something and I would like the right tests."

A clinician will ask private questions. They are there to choose tests, not to judge. Share what you can.

Tips for a smoother visit

Ask how and when you will get results, and what happens if a result needs follow-up.
Ask whether your partners can be treated too. In Massachusetts, state law allows clinicians to prescribe treatment for partners of patients diagnosed with chlamydia without seeing the partner first. The Massachusetts Legislature (M.G.L. c. 111, s. 121B) and the CDC describe this as expedited partner therapy.
If you are under 18, the City of Boston says people 13 or older can get a confidential STI test without parental permission. Massachusetts law (M.G.L. c. 112, s. 12F) lets a minor who reasonably believes they are at risk consent to this care.
Ask about vaccines such as HPV, and about HIV prevention options if they are relevant to you.

Common mistakes to avoid

Assuming "full" means everything. Always check the actual list.
Skipping throat or rectal swabs when those sites were involved in sex.
Testing too soon after an exposure and treating one result as final. Ask about repeat testing.
Ordering a herpes blood test without a plan for what you would do with a result that is hard to interpret.
Waiting until symptoms appear. Many infections cause no symptoms, so symptoms are not a reliable signal.
Not asking what the visit will cost. A clinic's page may not list a price. Ask by phone.

What results may look like

Many people get all negative results. A negative result generally means the infections tested for were not found in that sample at that time. Depending on timing, a clinician may still suggest a repeat test later.

If a test is positive, a clinician will explain next steps. Chlamydia, gonorrhea, syphilis and trichomoniasis are curable with treatment prescribed by a clinician. HIV and herpes are not curable, but both are treatable and manageable with care from a clinician. HPV often clears on its own, and a clinician can explain monitoring and prevention.

Results can also be unclear. A clinician may suggest a repeat or a different test. That is a normal part of testing.

A last note on reporting and privacy

Massachusetts law (M.G.L. c. 111, s. 111) provides that certain infections are reported to local boards of health, and M.G.L. c. 111, s. 119 makes those reports and records non-public, with limited exceptions. Ask the clinic how your information is handled if you have concerns.

Full STD Panel vs Targeted Testing: How to Decide