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DNA Testing in New Castle County, Delaware

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TestMark DNA provides certified DNA testing throughout New Castle County, Delaware. With 18 collection sites across 6 cities, there is a convenient location near you. All sites are CLIA-certified and staffed by trained professionals. Call (866) 702-7644 for a free consultation.

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DNA Testing Coverage in New Castle County

TestMark DNA operates 18 certified collection sites across 6 cities in New Castle County, Delaware, covering the ZIP codes listed below. Every site is CLIA-certified to the same federal standard used by hospital and physician laboratories.

18
Collection Sites
6
Cities Served
12
ZIP Codes Covered

ZIP Codes Served in New Castle County

  • 19701
  • 19702
  • 19707
  • 19709
  • 19711
  • 19713
  • 19720
  • 19803
  • 19805
  • 19808
  • 19809
  • 19810

Largest Cities by Number of Sites

  • Wilmington7 sites
  • Newark4 sites
  • Hockessin3 sites
  • Middletown2 sites
  • New Castle1 site

1 additional city is served. See the full list above.

Cities in New Castle County

All Locations in New Castle County

Frequently Asked Questions

Where can I get a DNA test in New Castle County, Delaware?

TestMark DNA operates 18 certified collection sites across 6 cities in New Castle County, with the largest concentration in Wilmington. No appointment is required and results are typically returned in 3 to 5 business days. Call (866) 702-7644 to confirm the closest site to you.

Which cities in New Castle County have DNA testing available?

TestMark DNA serves 6 cities in New Castle County, Delaware. The full list of cities and their collection sites is shown above on this page. Wilmington has the most collection sites and is typically the closest option for visitors traveling within the county.

Do I need an appointment for DNA testing in New Castle County?

No appointment is required at most TestMark DNA collection sites in New Castle County. Walk-ins are welcome during regular business hours. Calling (866) 702-7644 before you arrive lets us confirm current wait times and which test is right for your situation.

How long do DNA test results take in New Castle County, Delaware?

Results for a standard DNA paternity test are typically returned within 3 to 5 business days from when all samples are received at the accredited laboratory. Turnaround applies to every collection site in New Castle County, regardless of which physical pickup location you visit.

Are DNA test results from New Castle County admissible in court?

Results from a legal DNA test performed at an accredited TestMark DNA site with a completed chain-of-custody form are typically accepted in court, including in Delaware courts. Personal (non-legal) tests are for private knowledge only and are not intended for legal use. Call (866) 702-7644 to confirm which test fits your situation.

What types of DNA tests are available in New Castle County?

TestMark DNA collection sites in New Castle County support paternity, maternity, sibling, grandparent, avuncular, and immigration DNA testing, plus home DNA kit options. All tests are processed at accredited laboratories, the same facilities used by hospitals and physicians.
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