At-Home STI Tests: What They Catch and What They Miss

Home Testing Guide • Updated October 2026 • How we review

Most people who order an STI test online are not doing it because a doctor told them to. They have been turning one night over in their head for a week and would rather not find out in a waiting room. That is a perfectly good reason, and the kits have become good enough to deserve it. What the product pages leave out is which infections each kit does not look for, and the timing mistake that turns a clean result into a meaningless one.

For people in recovery there is a second reason that has nothing to do with last weekend. If you ever injected drugs or shared equipment, hepatitis C belongs on the list. It can sit quietly for years doing damage to the liver, and it is now cured with eight to twelve weeks of pills.

Three kinds of home test

The first row is the new part. In March 2025 the FDA authorized the Visby test, a small PCR device that checks a vaginal swab for chlamydia, gonorrhea and trichomoniasis (trich) in about thirty minutes, with accuracy in the FDA’s data close to what a lab gets. There is a men’s urine version, but it is cleared for clinics only and cannot be bought over the counter. Syphilis has a fifteen minute finger-prick test, and HIV now has two self-tests: OraQuick, which uses a mouth swab, and INSTI, a finger-prick test approved for home use in October 2025 that reads in about a minute.

Mail-in kits are the older model. You collect urine, a swab or a few drops of blood, post it, and a certified lab runs the same kind of test a clinic would send out. LetsGetChecked and Everlywell do not ship to New York.

Testing too early

Every test has a window period, the stretch after exposure when an infection is there but not yet detectable. Test inside it and the negative tells you about the weekend before, not the one you are worried about.

One situation should not wait for any of this. If HIV is a real possibility and the exposure was within the last 72 hours, skip the test, go to an emergency room or urgent care today, and ask about PEP. It is a month of medication that can stop the virus taking hold, and it works better the sooner it starts.

Urine misses the throat and the rectum

A urine sample or a genital swab tests one site. Chlamydia and gonorrhea also infect the throat and rectum, usually with no symptoms at all, and the CDC estimates that urogenital-only testing may miss around 70 percent of these infections in men who have sex with men. The same logic applies to anyone who has oral or anal sex. LetsGetChecked’s two-infection kit says plainly that it tests genital sites only. If your exposure was not genital, you want a kit with throat and rectal swabs, such as myLAB Box’s three-site kit ($189), or a clinic.

What each panel leaves out

Prices are list prices at the time of writing, and all four companies run frequent discounts.

Notice how many popular panels leave out HIV. We do not know each company’s reasons. We do know that the FDA says no home blood-spot kit for HIV is authorized, and through 2026 it has sent warning letters to companies selling them. If a mail-in kit asks you to drip blood on a card for an HIV result, skip it and use an FDA-approved self-test instead.

Skip the herpes blood test

Several panels include a herpes antibody test, and this is where we part ways with the product pages. The CDC does not recommend herpes blood tests for screening people without symptoms, and the U.S. Preventive Services Task Force gives it a D grade, meaning the harms outweigh the benefits. The common test has a high false positive rate, and in a low-risk population as many as half of positive results can be wrong. People spend months distressed over an infection they may not have. If you have a sore, get a clinician to swab it while it is still there. That swab answers the question the blood test cannot.

A positive syphilis test may be old news

The finger-prick syphilis test looks for antibodies, and those usually stay for life, even after successful treatment. If you were treated for syphilis years ago, this test will read positive forever. The FDA is explicit that a positive needs confirmation with lab testing, which also tells a clinician whether the infection is current. For someone never diagnosed, it is a cheap and useful first step, sold for under $30 at launch.

Hepatitis C, for anyone who ever used

The CDC recommends that every adult be tested for hepatitis C at least once, and that people who inject drugs keep testing while the risk continues. The first test looks for antibodies. A positive means you were exposed at some point, but some people clear the virus on their own, so the next step is an RNA test showing whether the infection is still there. If it is, treatment is a course of pills, usually with mild side effects, and well over 90 percent of people who take it are cured. Of the panels above, Everlywell, myLAB Box’s Uber Box and STDcheck include hepatitis C. LetsGetChecked’s Standard 5 does not.

After a positive result

Free testing around here

Before paying $150 for a kit, know what is free. Pennsylvania’s State Health Centers offer free STI testing and treatment at all 59 locations, and the Scranton center takes walk-ins.

Hours change, so call ahead. If you have insurance, recommended STI screening is usually covered with no copay, which makes a doctor’s order cheaper than any kit on this page.

When to skip the kit

What we would buy

A positive at home is a reason to see someone this week, and a negative is only as good as its timing. Our guide to home test accuracy is about drug screens, but the logic carries over: treat a home result as a first step, and make the treatment decision with a clinician.