Japan gives you free, anonymous HIV and syphilis testing through public health centres — the hokenjo (保健所) — plus dedicated testing offices in the big cities. No name, no insurance card, no bill. It's one of the genuinely good parts of the system. The catch is what it leaves out: the swabs a gay man actually needs. Understand the gap and you can pair the free route with a clinic to get the full picture.
🩸 What the Hokenjo Covers
Every ward and city has a hokenjo offering HIV testing, almost always free and anonymous. Most also do syphilis, and many add hepatitis B and C and a urethral (urine) chlamydia/gonorrhoea test. Use an alias or initials — no residence registration, no insurance.
- Cost: Free.
- Anonymity: Full at most sites. No name or contact details.
- Results: Standard testing takes about a week (go back in person). Some sites run same-day rapid HIV and syphilis testing.
Window periods matter. A standard HIV test is reliable from about 4 weeks after exposure, fully conclusive by 3 months. Test too soon after a risk and a negative doesn't yet clear you — ask the counsellor when to come back.
🔬 The Blind Spot: Three-Site Swabs
A full screen for a gay man checks blood-borne infections (HIV, syphilis, hepatitis) and takes swabs from three sites — throat, rectum, and urethra — because gonorrhoea and chlamydia often sit in the throat or arse with zero symptoms, and a urine test alone misses them.
Most hokenjo sites don't do throat and rectal swabbing. They're built around HIV and syphilis.
So split it: hokenjo (or a metropolitan office) for your free HIV/syphilis baseline, and a sexual health clinic for three-site gonorrhoea/chlamydia swabs. At a clinic that's self-pay with no symptoms, usually insured if you have symptoms. The health-system guide below explains the split.
📍 Key Testing Sites in Tokyo
| Site | What / When | Notes |
|---|---|---|
| Tokyo Metropolitan Testing & Counseling Office (Minami-Shinjuku, Tama) | Same-day rapid HIV and syphilis every Saturday and Sunday | Free, anonymous, no appointment for rapid. English forms; aliases fine. |
| Ward hokenjo (e.g. Shinjuku Public Health Center) | Scheduled HIV/STI testing days (often twice a month) | Free, confidential. Some sites have English-speaking nurses — call ahead. |
| Tokyo Sexual Health (NCGM, Shinjuku) | Multilingual HIV/STI testing and counselling | English, Japanese, Chinese, Thai, Vietnamese, Spanish, Nepali. |
| akta community center (Shinjuku Ni-chōme) | Community drop-in; runs the free postal HIVcheck self-test | Gay-community space; the postal testing guide below has the detail. |
The Tokyo Metropolitan office's weekend rapid service is the fastest free way to an HIV and syphilis result — handy when you can't wait a week. Get there early; slots are limited.
🌏 Outside Tokyo
Every prefecture runs the same free, anonymous hokenjo testing, and the big cities have gay-community testing programmes (MASH Osaka, and the Nagoya and Fukuoka community centres). The Outside Tokyo guide below has the city-by-city detail.
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