RTI International
Research Triangle Park, North Carolina · EPA NLLAP
At a glance
- Accredited to analyse
- lead: paint chips, dust wipes, soil (what that means)
- Price
- not on the official list: ask the lab for a quote
- Turnaround
- not published: ask when you send samples
- Accreditation runs to
- December 1, 2027
Lab facts
- Address
- Research Triangle Park, NC · Open in Google Maps
- Phone
- (919) 541-7483 (as printed on EPA’s NLLAP list)
- Tests listed for
- Lead
- Left blank on the list
- The official list gives no street address, website for this site.
Copied from the official lists below. Business details only.
What this lab can test for you
- Lead paint testing: accredited to analyse paint chips scraped from walls, trim or windows; dust wipes from floors and window sills, the test used after renovation; soil from play areas and the drip line around the house.
From the accreditation scope on the official list; distances are straight lines between ZIP-code centres. Ask the lab which sample types it accepts by mail before you cut or wipe anything.
Accreditation record
- EPA NLLAP lead: recognized for paint chips, dust wipes, soil, accredited by AIHA Laboratory Accreditation Programs; commercially available (list October, 2026 Round 132, Month 3 of 3).
Accreditation as listed by EPA NLLAP on October 14, 2026; confirm with the lab.
EPA NLLAP: lead
Accreditation as listed by EPA NLLAP on October 14, 2026; confirm with the lab.
- Name on the list
- RTI International
- City on the list
- Research Triangle Park
- Recognized for
- paint chips, dust wipes, soil
- Commercially available
- Yes
- Lab type
- Fixed Site
- Accrediting organization
- AIHA Laboratory Accreditation Programs
- List version
- October, 2026 Round 132, Month 3 of 3
Open EPA’s NLLAP list. The list prints no accreditation number or expiry date. Confirm the test you need with the lab before you send samples.
Other accreditations on record
- AIHA Laboratory Accreditation Programs, lab ID LAP-100600: industrial hygiene, including asbestos air samples (IHLAP); lead in paint, dust and soil (ELLAP), valid to December 1, 2027 (381 days left). Scope as printed: “INDUSTRIAL HYGIENE; ENVIRONMENTAL LEAD” (certificate or directory entry).
From the accrediting body’s public directory, read November 15, 2026 and re-checked by a second reader. EPA’s lead list relies on these bodies but prints no ID or expiry date.
Also a certified drinking-water lab
A lab with the same name at the same ZIP code (or city) is on a state drinking-water certification list, so you may be able to test well water there too. Matched by name and location; confirm with the lab.
- RTI International · Research Triangle Park · listed by GA (Laboratories Certified by Georgia for Chemical Monitoring + Laboratories Certified by Georgia for Lead and Copper Monitoring, version January 9, 2025)
Nearest other accredited labs
Lead paint testing
1 other accredited lead lab site within 25 miles. Straight-line distance between ZIP-code centres (the list gives this site a city but no ZIP code, so its point is the city’s most common ZIP).
| Lab site | Town | Distance | Prints a homeowner price |
|---|---|---|---|
| North Carolina State Lab of Public Health | Raleigh, NC | 11 mi | – |
| Scientific Analytical Institute | Greensboro, NC | 57 mi | – |
| EMSL Analytical, Inc. | Kernersville, NC | 69 mi | Yes |
| EMSL Analytical, Inc. | Pineville, NC | 128 mi | Yes |
| Environmental Hazards Services, L.L.C. | North Chesterfield, VA | 129 mi | – |
Homes around this lab
Durham County: 31% of 153,022 housing units were built before 1980, below the North Carolina share of 34% (Census ACS 2020–2024, table B25034). EPA links lead-based paint to homes built before 1978, and asbestos was common in building materials of that era. The ACS groups years by decade, so 1980 is the nearest cut.
Older homes within 25 miles
About 155,562 homes built before 1980 are in the 3 counties whose centre lies within 25 miles of this lab (Durham County, Orange County, Wake County).
- Lead paint testing: 2 accredited lab sites within 25 miles, about 77,781 older homes per site, fewer than the North Carolina figure of 332,358 older homes per listed site (5 sites).
Census ACS 2020–2024, table B25034; county centres are the mean of their ZIP-code points.
Water and housing around this lab
- Radon: Durham County is EPA Zone 3, low radon potential (below 2 pCi/L). Renovation that opens floors or basements is a common time to test.
- Private wells: about 25,458 people, 8% of residents, drink from a private well (USGS 2015), the 82nd highest share of 100 counties in North Carolina.
- Well-water testing: the nearest state-certified drinking-water lab that its state list marks as taking homeowner samples is DURHAM COUNTY HEALTH DEPARTMENT, 5 miles away.
- Public drinking water: 3 public water systems serving Durham County reported EPA UCMR 5 PFAS tests (2023–2026); 2 had a PFOA or PFOS result at or above 4.0 ng/L, the level EPA set for each in 2024; the highest result was at Durham, City Of (PFOA 4.1 ng/L, PFOS 5.8 ng/L). These are water suppliers’ results, not private wells.
- Arsenic in private wells (USGS model): about 4,608 private-well users in Durham County may drink water above 10 µg/L of arsenic (2010 base; a screening estimate, not a measurement).
County figures for Durham County, NC, where this lab’s ZIP code lies: EPA radon zone map, USGS 2015 water-use and arsenic estimates, EPA UCMR 5 (public water systems), state drinking-water lab lists and our septic rule register.
Is this your lab?
Names, addresses and phone numbers come from the official lists, and the accrediting program can correct them. To tell us about a mistake, contact us.