“I did something stupid and I’m terrified I’ve got HIV — can you test me, secretly?”

A frightened teenager requesting an HIV test after unprotected sex needs non-judgemental, confidential sexual-health care delivered with calm. He is entitled to confidential care as a competent young person — encourage but do not force involving a parent, and be clear about confidentiality’s safeguarding limits, as this trust enables honest risk assessment. The critical first step is establishing the EXACT timing of the exposure: if it was within 72 hours, assessment for post-exposure prophylaxis (PEP) is urgent and time-critical — refer same-day to sexual health or A&E, as PEP should start as soon as possible (ideally within 24 hours, never beyond 72), and whether it is recommended depends on the type of sex and the partner’s likely HIV status (BHIVA/BASHH 2021). Answer "will it tell me for sure now?" honestly: HIV tests have a window period — a 4th-generation antigen/antibody laboratory test detects about 95% of infections by 4 weeks and a negative result at 45 days or later is conclusive (BHIVA/BASHH/BIA 2020), so a negative test done sooner does not exclude infection and must be repeated; antibody-only home finger-prick tests have a longer window, and syphilis is repeated at about 12 weeks. Take a focused risk history (type of exposure, partner status/risk, condom use, other partners, substances), offer a broader screen (chlamydia, gonorrhoea, syphilis, hepatitis B, hepatitis C if risk factors, with hepatitis B vaccination), calibrate the realistic (usually low) per-exposure transmission risk without dismissing the fear, and discuss PrEP for future risk. Keep a safeguarding lens (consent, exploitation, coercion, vulnerability) and act on concerns. Above all, contain the online-amplified fear with accurate information, a clear testing plan and a safety-net, providing condoms and risk-reduction advice — the emotional containment matters as much as the clinical plan.