Kawasaki Kensa Clinic Ueno Branch is a specialized clinic for internal medicine of sexually transmitted infections, located a 4-minute walk from Ueno Station. The clinic conducts anonymous testing with consideration for privacy, allowing patients to visit without worrying about family or company finding out through private medical treatment. The clinic has a system that allows visits without appointments, and for samples collected by 2:00 PM, same-day results are provided for STI tests including chlamydia, gonorrhea, syphilis, mycoplasma, ureaplasma, candida, trichomonas, and others. Test results can be checked online, so there is no need to revisit the clinic. In case of positive results, treatment with in-house prescriptions can be received on the same day at the earliest. These services enable rapid testing by specialized clinical laboratory technicians stationed at the adjacent public registered hygiene testing laboratory. The clinic provides English-language support and barrier-free accessibility, and accepts various payment methods including cash, credit cards, debit cards, transportation electronic money, iD, QUICPay, PayPay, and others. In February 2024, the clinic began offering ED treatment medications, started medical diets in April of the same year, and has been providing HIV preventive medications PEP and PrEP since February 2025.