The first dose is an emergency
New York guidance says PEP should begin immediately, ideally within two hours. CDC says as soon as possible, ideally within 24 hours. PEP should not begin later than 72 hours after exposure.
If the exposure was within 72 hours, act now. Call Nao Medical at (917) 310-3371, call the 24/7 NYC PEP Hotline at 844-373-7692, or go to an emergency room or NYC Sexual Health Clinic. Do not delay care while comparing options.
These points affect medication safety, test timing, or follow-up. The linked primary guidance supports each summary.
New York guidance says PEP should begin immediately, ideally within two hours. CDC says as soon as possible, ideally within 24 hours. PEP should not begin later than 72 hours after exposure.
CDC recommends a 24-hour follow-up, laboratory antigen/antibody plus diagnostic NAT testing at four to six weeks, and final testing with both assays at 12 weeks after exposure. Narrow exceptions can change the interim test.
New York guidance says ideally within two hours; CDC says ideally within 24 hours. Both set 72 hours as the latest start.
If prescribed, PEP is a 28-day course of antiretroviral medication.
When PEP is indicated, the first dose should not be delayed while laboratory test results are pending.
The exact plan depends on your history, test results, coverage, and medication choice. These are the usual steps.
Tell the clinician what happened, when it happened, the body fluid and exposure site, source information when known, and any current PrEP use.
Complete baseline HIV testing, creatinine, liver enzymes, and hepatitis B testing. If a rapid point-of-care antigen/antibody test is used, obtain a laboratory antigen/antibody test in parallel without delaying the first PEP dose. Pregnancy testing applies when relevant; hepatitis C and STI testing depend on the exposure. Some patients also need an HIV nucleic acid test.
If PEP is indicated, begin promptly rather than waiting for all laboratory results to return.
Take the prescribed regimen every day for 28 days and contact the care team about side effects or missed doses.
Complete a 24-hour follow-up, interim testing at four to six weeks, and final HIV testing at 12 weeks. Discuss a direct transition to PrEP if future exposure is possible.
Nonoccupational PEP, often called nPEP, is used after a possible exposure outside the workplace. Examples can include sex, sharing injection equipment, sexual assault, or another contact in which potentially infectious fluid reached a mucous membrane, broken skin, or a puncture site.
The clinician evaluates whether the exposure presents a substantial risk and what is known about the source person's HIV status and viral suppression. When the source status is unknown, the decision is made case by case. PEP is not recommended for exposures with no substantial HIV transmission risk.
A rapid or laboratory blood antigen/antibody test is recommended at baseline. If a rapid point-of-care antigen/antibody test is used, obtain a laboratory antigen/antibody test in parallel without delaying the first PEP dose. Routine baseline testing includes serum creatinine, ALT and AST, hepatitis B testing, and pregnancy testing when applicable. Hepatitis C and STI testing are selected for the exposure. An HIV diagnostic NAT is added in some situations, including recent long-acting injectable PrEP.
CDC's 2025 guidance calls for contact within 24 hours to confirm medication access, tolerability, and adherence. Interim laboratory antigen/antibody testing plus diagnostic NAT is generally performed four to six weeks after exposure. Final testing uses both assays at 12 weeks. A clinician may adjust the interim schedule under the limited exceptions in the guideline.
Pregnancy and breastfeeding are not reasons to withhold indicated PEP. Breastfeeding requires patient-centered counseling about continuing versus interrupting feeding while PEP is taken and HIV acquisition is excluded. New York guidance advises avoiding breast or chestfeeding for three months after exposure, while allowing it when HIV-negative status is confirmed.
Sexual assault, a new exposure during PEP, and occupational needlesticks can change the care pathway. These situations still require prompt evaluation and should not delay the first assessment.
Many insurance plans, including Medicaid, cover emergency PEP. Medication assistance may be available for uninsured or underinsured patients. Coverage should be addressed without slowing the first-dose decision.
Nao Medical visits are confidential clinical care. If Nao Medical cannot evaluate you within the 72-hour window, use the NYC PEP Hotline, an emergency room, or an NYC Sexual Health Clinic immediately.
These clinics are included in the current PEP booking route. Current appointment timing must still fit within the 72-hour limit. If it does not, use the 24/7 NYC PEP Hotline or an emergency department immediately.
Bronx
932 E 174th St, Bronx, NY 10460
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Queens
37-15 23rd Ave, Astoria, NY 11105
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Bronx
2063A Bartow Ave, Bronx, NY 10475
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Brooklyn
341 Eastern Pkwy, Brooklyn, NY 11216
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Long Island
232 W Old Country Rd, Hicksville, NY 11801
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Queens
80-10 Northern Blvd, Jackson Heights, NY 11372
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Queens
90-18 Sutphin Blvd, Jamaica, NY 11435
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Queens
30-07 36th Ave, Astoria, NY 11106
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Long Island
135 Mineola Blvd, Mineola, NY 11501
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Manhattan
259 1st Ave, New York, NY 10003
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
Brooklyn
308 Graham Ave, Brooklyn, NY 11211
Use the urgent PEP booking route to confirm immediate availability at this clinic. Do not wait for a Nao appointment if the 72-hour treatment limit is at risk.
The right option depends on whether the need is urgent after an exposure, ongoing prevention, or testing.
| Care option | Typical schedule | What to consider |
|---|---|---|
| PEP | Emergency 28-day medication course after a possible exposure | Start as soon as possible and no later than 72 hours |
| PrEP | Ongoing medication taken before possible future exposures | Daily oral, every-two-month Apretude, or every-six-month Yeztugo options |
| HIV testing | Diagnostic screening based on exposure timing and test type | A negative early test does not replace urgent PEP evaluation |
Clinical facts in this overview were checked against the following primary guidance and prescribing information.
Published by Nao Medical.
Updated August 1, 2026. This information is not a substitute for an individual medical evaluation. A licensed clinician determines medication eligibility, testing, dosing, and follow-up. Contact Nao Medical with a question or correction.
Choose the care path that matches your timing, then let the Nao Medical team coordinate testing, coverage, and follow-up.
Start an urgent PEP evaluationGeneral information only. This page is not medical advice and does not replace diagnosis, treatment, or guidance from a licensed clinician.
Content was updated August 1, 2026 from the sources cited on this page. Medical guidance, prescribing information, medication availability, and insurance rules can change. A licensed clinician must confirm current information and determine each patient's eligibility, testing, treatment, administration setting, and follow-up. Call 911 for a medical emergency. Contact Nao Medical with a question or correction.