Bring a Government-Issued ID
Adults bring a driver's license, state ID, or passport. Children under 18 do not need ID. A birth certificate is helpful for legal tests but not required for personal tests.

All collection sites are CLIA-certified - the federal standard for clinical laboratory testing.
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| Monday | 6:30 AM - 3:30 PM |
| Tuesday | 6:30 AM - 3:30 PM |
| Wednesday | 6:30 AM - 3:30 PM |
| Thursday | 6:30 AM - 3:30 PM |
| Friday | 6:30 AM - 3:30 PM |
| Saturday | 6:30 AM - 10:30 AM |
| Sunday | Closed |
TestMark DNA schedules chain-of-custody DNA collections at 161 Thomas Johnson Drive, Frederick, MD 21702, inside the Aspen Ridge Professional Center on the Thomas Johnson Drive medical corridor. The office park has buildings at 161, 163 and 165, so look for number 161, and order through TestMark DNA first so your paperwork is ready.
Aspen Ridge Professional Center is a multi-building medical and professional office park on Frederick's Thomas Johnson Drive medical corridor, and TestMark DNA's collection site is in one of its buildings, 161 Thomas Johnson Drive. The park spreads across three street numbers, 161, 163 and 165, and its buildings hold several separate medical practices, so match the number on the building before you go in: this collection site is in 161. Inside the same building you will also find physical therapy offices in Suite 100 and a rheumatology practice in Suite 250, which helps confirm you have the right door. The park's owner describes Aspen Ridge as about two miles from Frederick Health Hospital and from Historic Downtown Frederick.
Most visitors arrive by car from US 15, the Catoctin Mountain Highway. On the city's north side, US 15 has a diamond interchange at Monocacy Boulevard and Christophers Crossing, and Monocacy Boulevard was extended west to meet Thomas Johnson Drive. At its southern end, Thomas Johnson Drive meets Opossumtown Pike, the same road that leads to Frederick Community College's main campus at 7932 Opossumtown Pike. Practices at Aspen Ridge advertise free surface parking, and TransIT, the Frederick County bus service, lists stops along Thomas Johnson Drive for anyone coming without a car.
TestMark DNA's Frederick collection site is at 161 Thomas Johnson Drive, in the Aspen Ridge Professional Center on the city's north side.
Maryland does not require a prescription or doctor's order for a DNA paternity test. Under Maryland Family Law section 5-1028, unmarried parents may execute an affidavit of parentage, which constitutes a legal finding of paternity. Either signer may rescind it in writing within 60 days. After that window closes it can be challenged in court only on grounds of fraud, duress or material mistake of fact, and genetic test results alone are not enough to undo it. That 60-day window is worth knowing before anyone signs. For a result to be used in court, the test has to be performed by an accredited laboratory with a completed chain-of-custody form, which means samples are collected at a certified site and everyone tested shows government ID. A home kit gives you a private answer but is not accepted for child support, custody or a birth certificate change. Call and we will confirm which test your situation needs.
Call our team and we'll walk you through the right test, answer your questions, and confirm your nearest location.
(866) 702-7644Visit 161 Thomas Johnson Dr, Frederick, MD 21702. A quick, painless cheek swab is all that is needed.
Get DirectionsReceive your confidential results delivered securely by email. Results are accurate, private, and legally defensible.
DNA testing at our Frederick, Maryland collection site is straightforward, painless, and typically takes less than 30 minutes. Here is what to know before you visit 161 Thomas Johnson Dr.
Adults bring a driver's license, state ID, or passport. Children under 18 do not need ID. A birth certificate is helpful for legal tests but not required for personal tests.
Collection takes about a minute. A trained technician rubs a soft cotton swab on the inside of the cheek for each tested party. No needles, no blood, no fasting required.
Most visits to 161 Thomas Johnson Dr in Frederick take under 30 minutes from check-in through sample collection, including the chain-of-custody paperwork completed in person.
Collection sites in Frederick, Maryland handle chain-of-custody (legal) tests ordered through TestMark DNA. We recommend scheduling your visit so everyone arrives prepared: call (866) 702-7644 and we'll confirm the right test, book your collection, and tell you what ID to bring.
Infants, toddlers, and minors are all eligible. The cheek swab is the same regardless of age. For legal tests involving a minor, the custodial parent or legal guardian must be present to sign the chain-of-custody form.
Once all samples are received at the accredited laboratory, standard turnaround is 3 to 5 business days. Results are delivered confidentially by encrypted email or secure portal. They are never released over the phone.
Questions before you visit? Call (866) 702-7644 for a free consultation.
DNA test pricing in Frederick, Maryland depends on the specific test you need. Call TestMark DNA for a free consultation. We will confirm the exact price for your situation before you visit the collection site.
Paternity, maternity, sibling, grandparent, immigration, and home kit tests are each priced differently. Legal (court-admissible) tests cost more than personal-knowledge tests because they include chain-of-custody documentation.
DNA paternity and relationship testing is classified as a non-medical test and is not reimbursed by health insurance plans. Payment is collected directly at the time of testing.
We walk you through pricing on the phone before you commit. There is no charge to call, no charge to ask questions, and no obligation to book a test after the consultation.
Tests that involve additional parties (for example, a paternity test that also includes the mother, or sibling tests with multiple siblings) often qualify for a per-person discount. Confirm by phone before your appointment.
Get an exact quote for your test in under five minutes. Call (866) 702-7644.
Both options available - call to confirm which is right for your situation.
Not sure which test you need? Call for a Free Consultation - (866) 702-7644This Frederick, Maryland collection site serves patients arriving from 21702 and the surrounding ZIP codes listed below. If you are closer to a neighboring city, our nearby TestMark DNA locations may be a shorter drive.
We schedule collections for customers from any ZIP code. The list above reflects the nearest service area for Frederick.
Each link goes to the city hub with all TestMark DNA collection sites available in that city.
110 Baughmans Ln Ste 180, Frederick, MD 21702
View Hours & Details →610 Solarex Court Suite 102, Frederick, MD 21703
View Hours & Details →205 Center Street Suite 204, Mount Airy, MD 21771
View Hours & Details →22616 Gateway Ctr Dr Ste 600, Clarksburg, MD 20871
View Hours & Details →19785 Crystal Rock Dr Ste 308, Germantown, MD 20874
View Hours & Details →Get DNA testing in Frederick started today
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