STI Testing in Japan: Where Can You Get Tested, and Does Insurance Cover It?

This article is based on public information from MHLW, JGC Health Insurance Society, SCSK Health Insurance Society, and other official sources.

1. Quick Summary

2. The 4 Places You Can Get Tested in Japan

There are broadly four places to get STI testing in Japan. Here's a quick overview of the pros and cons of each.

• Public health centers / municipal testing sites: Some offer free, anonymous testing. Most focus on HIV and syphilis, though some also test for chlamydia and gonorrhea.
• Hospitals/clinics covered by public health insurance (urology, gynecology, etc.): If a doctor determines that an exam or test is medically necessary based on symptoms or exposure risk, it may be covered.
• Private STI clinics (self-pay only): Many will test you even without symptoms, and let you choose which items to test for. Whether you can go anonymously varies by clinic. Fully out-of-pocket.
• At-home test kits: Anonymous, self-collected samples mailed in. Useful for checking when you have no symptoms. Self-pay.

Here's a rough cost comparison:

*Based on prices published by several private clinics; actual costs vary by facility and test panel.

Your out-of-pocket cost under insurance depends on what's examined and tested. See Section 4 for a worked example.

3. What Decides Whether Insurance Covers Your Test

Many people assume that health insurance automatically covers medical care at a hospital. In Japan, however, that's not always the case. According to the JGC Health Insurance Society, Japan's public health insurance system is designed to cover treatment for illness or injury. Health checks or screenings done purely at the patient's own request are, in principle, not covered. When a doctor determines that testing is medically necessary for diagnosis or treatment, though, it can be covered.

The same logic applies to STI testing. If you have symptoms, or a doctor judges testing necessary based on a known exposure, it may be covered. A screening test requested purely because the patient wants peace of mind, with no symptoms or specific exposure risk, is in principle self-pay. Since this ultimately comes down to the doctor's judgment, it's worth confirming at the time of your visit.

In short, for STI testing:

• You have symptoms, or a doctor judges testing necessary due to a known exposure → insurance coverage is possible
• No symptoms, no suspected exposure, testing purely by personal choice → in principle, self-pay

The actual scope of coverage depends on the specific exam and test items, so it's best to confirm with the clinic you visit.

4. When Insurance Actually Does Cover It

If you have noticeable symptoms, or a doctor otherwise judges an exam or test to be necessary, it may be covered by insurance (JGC Health Insurance Society). Where insurance applies, according to Japan's Ministry of Health, Labour and Welfare (MHLW), the patient's co-pay for those under 69 is, in principle, 30% (the exact percentage varies by age and income).

That said, which tests are covered is limited to what the doctor determines is necessary based on the clinical picture. According to SCSK Health Insurance Society, insurance only covers tests that are "necessary for the examination." For example, if you have painful urination and chlamydia or gonorrhea is suspected, the tests needed to diagnose that may be covered. On the other hand, if you want a test unrelated to your symptoms or suspected exposure, there's no guarantee it will be covered. Whether additional tests can be added, and how the costs are handled, varies by provider — so confirm at the time of your visit. Coverage for HIV and syphilis testing also depends on the clinical context and reason for your visit, so check with the provider beforehand.

As a concrete cost example, one STI specialty clinic's published price list for care covered by public health insurance shows a chlamydia/gonorrhea test plus consultation at around ¥2,200 with a 30% co-pay, or around ¥3,000–3,500 including treatment. This is just one example — your actual out-of-pocket cost will vary depending on the test method (antigen test vs. nucleic acid detection, etc.), sample collection fees, and whether medication is prescribed. Confirm the exact amount with the clinic you visit.

Meanwhile, testing done "just to check" or "because I'm anxious," with no symptoms, is in principle self-pay. Even if your partner is known to be infected, whether this counts as grounds for coverage — if you yourself have no symptoms — depends on the clinic and doctor's judgment. It's worth confirming beforehand.

5. Why Testing "Just to Check" Usually Isn't Covered

As mentioned in Section 3, Japan's health insurance system is fundamentally built around covering treatment for illness or injury (JGC Health Insurance Society). Routine screening done at the patient's own request is, in principle, not covered (self-pay). That said, even without symptoms, if a doctor judges testing medically necessary — for example, based on a known exposure — it may still be covered. This isn't unique to STI testing; it reflects how Japan's health insurance system works across the board.

6. What You Should Know Before Using Your Insurance Card

Using your health insurance has real advantages, but there are a few things worth knowing. Seeing a doctor on insurance doesn't automatically mean your employer finds out. Still, it helps to understand how the system actually works.

When you use health insurance, information about your visit is recorded with your insurer (the Japan Health Insurance Association, your company's health insurance society, National Health Insurance, etc.). Some insurers issue a "medical expense notice" (iryōhi no oshirase). According to the National Tax Agency, this notice qualifies as a simplified document for the medical expense tax deduction only if it includes six specific items: the insured person's name, the month and year of treatment, the name of the person treated, the name of the hospital, clinic, or pharmacy where treatment was received, the amount paid, and the insurer's name.

In other words, a notice meeting these requirements will list the name of the medical facility — but it typically does not list the diagnosis or specific test names. That said, information about your treatment is still conveyed to the insurer through claims data (receipts), among other channels. Whether this notice is issued at all, and how it's formatted, varies by insurer.

How the medical expense notice is delivered also varies depending on your insurer. For example, the Japan Health Insurance Association (Kyokai Kenpo) ended its regular mailed paper notices after the January 2026 mailing, and going forward directs people to check via the My Number portal (Mynaportal) instead. Previously, for company employees, these notices were sometimes mailed to the employer's office, which would pass them along unopened to the employee. If you want a paper notice going forward, you now need to submit a request form each time. Since delivery methods vary by insurer, if this is a concern for you, it's worth checking directly with your insurance provider.

7. Free, Anonymous Testing at Public Health Centers

Many municipal public health centers (hokenjo) offer free, anonymous HIV and STI testing. According to the HIV Testing & Counseling Map, run by an MHLW research group, HIV testing is available free and anonymously (no need to give your name or address) at many public health centers and municipal testing sites nationwide. Testing days, whether you need an appointment, and which tests are offered all vary by location. Some municipalities, like Tochigi Prefecture, require HIV testing as part of the visit and don't offer syphilis or chlamydia testing on its own.

The HIV "window period" (the time between infection and when a test can reliably detect it) depends on the test method used. According to the HIV Testing & Counseling Map, antibody tests typically detect infection around 4 weeks after exposure. Testing before that window closes can give a false negative even if you're infected, so for a more reliable result, a repeat test after 3 months is recommended. NAT (nucleic acid amplification testing) can sometimes detect HIV as early as 2–3 weeks after exposure. However, only some facilities offer this test, so check in advance if you want this option. For timing and test method questions, check directly with the testing facility or clinic.

Other STIs have their own recommended testing windows too. For example, Fukui City's guidance recommends waiting at least a month after potential exposure before testing for genital chlamydia. (This is Fukui City's guidance specifically — exact windows vary by test and municipality.)

As for results, the HIV Testing & Counseling Map notes that some facilities offer same-day screening results if the result is negative, but if a positive screening result requires a confirmatory test, getting the final result typically takes 1–2 weeks. Since testing is anonymous, results are generally given in person when you return to the facility. Whether a certificate is issued varies — some facilities don't issue one at all (e.g., Chuo City), while others issue a paid test result certificate (e.g., Okazaki City).

It's best to check your municipality's website in advance to see which tests are offered locally. If you want to search nationwide, the MHLW research group's HIV Testing & Counseling Map lets you search testing facilities by prefecture.

8. For Foreign Residents in Japan

Language support at public health centers

Foreign-language support varies by health center and municipality, and some locations don't offer much support at all. A report from Japan Institute for Health Security (JIHS) describes training programs for multilingual HIV testing that use medical interpreters — so it's worth checking in advance what's available. Support does exist in some places: Minato City, for instance, offers a three-way interpreted phone service, and Toyota City supports English, Portuguese, Spanish, and Chinese.

If you want to find a testing facility with foreign-language support near you, the HIV Testing & Counseling Map lets you filter search results to facilities that offer "foreign language support." If you're not confident booking or communicating in Japanese, this official search tool is a good place to start.

Finding providers covered by public health insurance (official resources)

If you're looking for a hospital or clinic outside the public health center system that offers foreign-language support, the MHLW's nationwide "Medical Information Net" (Nabii) lets you search for medical providers across Japan. If you live in Tokyo, the Tokyo Metropolitan Bureau of Health and Medical Care's page also points to Tokyo-specific services like the "Himawari" medical facility referral service for foreign patients. You can also find English-language instructions for LoveHealth's at-home test kits on our website.

Related links

If you're looking for more in-depth information or community resources on HIV/STIs, HIV Map (a privately run information site) is worth checking out. If you want to find English-speaking hospitals and clinics by area in Tokyo, The Expat's Guide to Japan (a privately run resource for foreign residents) is another helpful reference.

9. Summary: How to Choose

• You have symptoms → Go to an insurance-covered clinic or hospital (coverage may apply)
• No symptoms, but you're concerned → Choose between a public health center (some offer free testing, mainly HIV/syphilis), a private STI clinic, or an at-home test kit (generally full self-pay)
• Foreign residents → If you're not confident in Japanese, you can search for foreign-language-friendly providers nationwide through Medical Information Net (Nabii). LoveHealth's test kits also include English instructions on our website.

At-home test kits are one option when you have no symptoms. They can't diagnose or treat you directly, but LoveHealth connects you to a partner medical provider based on your results, so you can move straight into treatment if needed. Partner providers are located nationwide, so you can find care near you wherever you live. If you have symptoms, or your at-home test comes back positive, don't stop at the kit alone — see a doctor. Doing so may also mean your care is covered by insurance.

10. FAQ

This article is for general informational purposes only and is not a substitute for a medical provider's diagnosis or an insurer's coverage decision. Please confirm actual testing options and insurance coverage with the clinic you visit and your insurer.

Sources

• JGC Health Insurance Society — "What Care Is Covered by Health Insurance"
• Ministry of Health, Labour and Welfare (MHLW) — Co-pay rates
• SCSK Health Insurance Society — Which tests are and aren't covered
• STI specialty clinic — published price example for insurance-covered care
• National Tax Agency — Medical expense tax deduction requirements
• Japan Health Insurance Association (Kyokai Kenpo) — End of mailed medical expense notices
• HIV Testing & Counseling Map (MHLW research group)
  • What to know before testing
  • Testing facts (window periods, result delivery, etc.)
  • Facility search, including foreign-language filter
• Tochigi Prefecture — HIV/STI testing information
• Fukui City — Genital chlamydia testing guidance
• Chuo City — HIV/STI counseling and testing
• Okazaki City — STI testing
• Japan Institute for Health Security (JIHS) — Report on multilingual HIV testing
• Minato City — HIV/STI testing at public health centers
• Toyota City — Multilingual HIV/STI testing support
• MHLW — Medical Information Net (Nabii)
• Tokyo Metropolitan Bureau of Health and Medical Care — Medical information services for foreign patients
• HIV Map (privately run information site)
• The Expat's Guide to Japan (privately run resource for foreign residents)

This article is for general informational purposes only and is not a substitute for individual diagnosis or treatment.