Same-Day STI Test London
Need answers today? Book or walk in for same-day STI testing on Harley Street — rapid results when you need them most.
Harley Street
London's Premier Medical District
FAST Screen — results in 6 hours
£350 — HIV, syphilis, chlamydia and gonorrhoea. Consultation, examination and prescription included.
Confidential
Discreet billing as Medical Express Clinic
Doctor-led
Experienced Harley Street clinicians
CQC regulated
Private clinic you can trust
STI testing prices
| Package / test | Price | Turnaround | Covers |
|---|---|---|---|
| Individual test (from) | £104 | 24 hours (6 hours on FAST) | Chlamydia, gonorrhoea, HIV, syphilis and more |
| Bronze Screen | £250 | Blood 24 hrs; urine/swab up to 3 days | HIV, syphilis, chlamydia, gonorrhoea + consultation |
| FAST Screen Simple | £350 | 6 hours | HIV, syphilis, chlamydia, gonorrhoea + consultation |
| Gold Screen | £475–£490 | Blood 24 hrs; urine/swab up to 3 days | 11+ infections including hepatitis B & C |
All screening packages include a doctor consultation, examination if needed, and prescription where clinically appropriate.
Turnaround times
| Sexual Health Clinic London | NHS GUM (typical London) | |
|---|---|---|
| Same-day appointment | Walk-in or book online, six days a week | Walk-in slots limited; waits vary by borough |
| Appointment wait | Same day or next day at Harley Street | Often 2–6 weeks for routine GUM |
| Core STI results | 6 hours (FAST) or 24 hours (standard bloods) | Typically 7–14 days |
| Doctor consultation | Included in all screening packages | Included at NHS GUM |
| Same-day treatment | Prescription or on-site injection (e.g. syphilis) | When clinically appropriate |
| Billing discretion | Private billing; pseudonym and cash accepted | Free; appears on NHS record if registered |
Private STI testing vs NHS sexual health services
NHS GUM clinics provide excellent free care — including PEP after HIV exposure. Private Harley Street testing is chosen for same-day access, 6-hour FAST results, broader panels, and billing that stays off your NHS GP record unless you request otherwise.
| Private (SHCL) | NHS | |
|---|---|---|
| Cost | From £104 per test; packages from £250 | Free |
| Best for | Same-day appointments, 6-hour results, discreet payment | Routine screening, PEP, complex HIV care |
| FAST Screen (6 hr) | £350 — HIV, syphilis, chlamydia, gonorrhoea | Not routinely available |
| GP record | Not shared with NHS GP unless you request it | Results on NHS record if registered with GP |
| Laboratory standard | UKAS-accredited partner laboratories (ISO 15189) | UKAS-accredited NHS labs |
References: BASHH (2024) — Standards for STI management; NICE CKS (2024) — Sexually transmitted infections — testing overview; UKHSA (2024) — Sexually transmitted infections and screening data. For PEP within 72 hours of HIV exposure, contact NHS sexual health or A&E immediately — we do not offer PEP.
Popular tests
Full guide: same-day STI results
For preparation tips, FAST vs standard package comparison, and who same-day testing is for, read our clinician-reviewed guide.
Same-day STI tests — what to expectBroader Harley Street care
Medical Express Clinic offers same-day Harley Street STI testing with doctor-led review for patients who want broader private medical follow-up.
Same-day STI testing at Medical ExpressFrequently asked questions
Can I get same-day STI test results in London?
Yes. Many of our tests return results from 6 hours. Same-day appointments are available seven days a week at our Harley Street clinic.
How long does a same-day STI test take?
The appointment typically takes 15–30 minutes depending on the tests required. Blood, urine and swab samples are taken in clinic.
Should I wait before testing after exposure?
Window periods vary by infection. If you are within a few days of exposure, book anyway — our clinicians will advise on optimal retest timing.
All medical content is reviewed by qualified healthcare professionals registered with the General Medical Council (GMC).