Have a sore right now? Get it swabbed today.
Same-day HSV PCR in Houston — walk in, no appointment, no insurance, no referral. Up to 40% less than urgent care. Results at 4:30 PM; if treatment is clinically appropriate, a licensed physician from our partner network sees you 4:30–6:00 PM.
Same-day HSV PCR in Houston — walk in, no appointment, no insurance, no referral. Up to 40% less than urgent care. Results at 4:30 PM; if treatment is clinically appropriate, a licensed physician from our partner network sees you 4:30–6:00 PM.
3707 Westcenter Dr Suite 100, Houston, TX 77042 · Mon–Fri 9:00 AM–5:00 PM · Sample by 1:00 PM · Your slot with the doctor is held when we take your sample
Medically reviewed by our MD Laboratory Director (a role required by CLIA; the director’s name is on file in the CMS CLIA database, #45D2048957, and can be verified independently) · Editorial policy
Three features, together, point strongly to HSV-1: it sits on the vermilion border (where lip meets skin), it is a cluster of small blisters rather than one bump, and it was preceded by tingling or burning before anything appeared. A pimple has none of those.
Have a sore right now? Swab it today while it is fresh — a lesion PCR is the most reliable herpes test there is, and it loses sensitivity as the sore crusts over.
📱 Text (713) 832-8892
📞 Call (713) 266-0808
📱 Text (713) 832-8892
📞 Call (713) 266-0808
3707 Westcenter Dr Suite 100, Houston, TX 77042 · Walk-ins welcome
Herpes vs. the three things it is mistaken for
| Cold sore (HSV-1) | Pimple | Angular cheilitis | |
|---|---|---|---|
| Where | Lip border | Anywhere on the skin | Corners of the mouth |
| Pattern | Cluster of blisters | Single bump | Cracks, fissures |
| Before it appears | Tingling, burning | Nothing | Soreness, dryness |
| Contents | Clear fluid, then crust | White pus head | No blister |
| Recurs in the same spot | Yes — typically | No | Sometimes |
What each stage looks like
| Stage | What you see and feel | Typical timing |
|---|---|---|
| 1. Prodrome | Tingling, itching, burning — nothing visible yet | Hours to a day before the sore |
| 2. Blister | A cluster of small, clear, fluid-filled blisters on a red base | Day 1–2 — best day to swab |
| 3. Ulcer | Blisters break open into shallow, painful, weeping sores | Day 2–4 — most contagious |
| 4. Crust | A yellow-brown scab forms; it may crack and bleed | Day 4–8 — PCR becomes less sensitive |
| 5. Healing | Scab falls away; pink new skin underneath; no scar | Day 8–12 |
The one detail that separates herpes from nearly everything else: it is a cluster. A single isolated bump with a white head is almost always something else.
Do not accept an HSV IgM blood test. CDC does not recommend it — it produces false positives and a great deal of unnecessary panic. If there is a sore, swab the sore. See lesion PCR vs. antibody testing.
We name drugs, never doses. Antiviral therapy for HSV follows CDC guidance; what you actually take is decided by a licensed physician who has examined you.
The single most useful thing on this page. If you have a sore right now, get it swabbed today — lesion PCR identifies HSV and tells you whether it is HSV-1 or HSV-2. Sensitivity falls as the sore dries and crusts, so the best day to test is the day it appears. Sample by 1:00 PM → result at 4:30 PM → if treatment is clinically appropriate, a licensed physician from our partner network sees you 4:30–6:00 PM. Same day. Walk in, no appointment, no insurance. Text (713) 832-8892.
FAQ
- Does a cold sore mean I have an STD?
- HSV-1 is usually acquired in childhood without any sexual contact. It is not a statement about you. It can be transmitted to a partner’s genitals through oral sex, which is worth knowing.
- How long is it contagious?
- Most contagious when a sore is present, particularly the weeping ulcer stage — but asymptomatic shedding also occurs. Avoid contact until it has healed.
- Will it scar?
- Typically not, if you leave it alone. Picking is what causes problems.
- Can I be tested and treated today?
- Yes. Swab by 1:00 PM, result at 4:30 PM, partner-network physician 4:30–6:00 PM. Text (713) 832-8892.
The sore will crust over in a few days — and the test gets less reliable as it does.
Walk in today. Result at 4:30 PM. Licensed partner-network physician 4:30–6:00 PM if you need treatment. No appointment, no insurance, up to 40% less than urgent care.
📱 Text (713) 832-8892 — fastest
📞 Call (713) 266-0808
Walk in today. Result at 4:30 PM. Licensed partner-network physician 4:30–6:00 PM if you need treatment. No appointment, no insurance, up to 40% less than urgent care.
📱 Text (713) 832-8892 — fastest
📞 Call (713) 266-0808
3707 Westcenter Dr Suite 100, Houston, TX 77042 · Mon–Fri 9–5 · Walk-ins welcome · CLIA #45D2048957 · CAP #8722734