Frequently Asked Questions

Testing through DDC follows a strict chain of custody, which makes our results defensible in courts and other government agencies. Many of our patients use their test results to obtain child support and for other important legal purposes, such as validating claims for  benefits or inheritances.

We’re ready to help. Ring us on 020 3301 7346

The chain of custody process is what makes a DDC legal paternity test results legally defensible in courts and other government agencies. It involves three main aspects:

1. The tested parties are properly identified when their samples are collected. (Their government-issued IDs are verified and photocopied.)
2. The DNA samples are collected by a neutral third party—someone who has no personal interest in the outcome of the test (e.g., a hospital, clinic, or laboratory staff person).
3. The samples are tamper-taped, securely packaged at the collection site, and carefully inspected upon receipt for any evidence of tampering.

When these requirements are satisfied and documented, the results are legally defensible. This means that the customer can use them for legal purposes such as child custody, child support, immigration, and more.

This test must be set up directly through DDC. We’re ready to help. Ring us on 020 3301 7346

You can DNA test a baby after birth as soon as the baby has been cleaned up by hospital staff. Because a cheek swab is used, it is important that the baby’s mouth be free from meconium, amniotic fluid, breast milk, or formula when doing the DNA collection.

Anyone over 16 years old participating in testing must bring a valid government-issued ID such as a driver licence, military ID, or passport to the sample collection appointment. For immigration testing only, if the child has a valid passport, they should provide the sample collector with a copy that will be included with the test sample when it is sent to the lab. For minors that do not have a passport for immigration testing, a recent photo is required. In addition, the person with legal responsbility for the child will need to sign a consent form allowing the minor to be tested.

When you arrive at your appointment, you will need to present proper identification, which the sample collector will verify and photocopy.

After you are properly identified, you will need to sign a form giving your consent for the test. If you are the legal custodian of a tested minor, you will have to sign the form on behalf of the child.

The collector will collect your DNA samples using simple buccal swabs—cotton-like swabs that he or she will rub against the inside of your cheek to gather loose cheek cells. The collector will then send all the samples to DDC.

Our collection process is designed to be convenient, simple, and painless!

For security reasons, we do not send a copy of your results via email. Instead, a PDF report can be downloaded from your secure online account on our website. We immediately send a notification email to the address on file as soon as the online report is ready to view. For a legal paternity test, all tested parties receive a hard-copy of the report as long as mailing addresses are given in writing.

Yes; names are on the report because a chain-of-custody process has been followed and the identities of participants have been independently verified.

We follow all paternity-test guidelines for the language used in the report. For this reason, your paternity test results will say whether the possible father IS EXCLUDED or IS NOT EXCLUDED as the biological father of the child tested.

• IS EXCLUDED: Means that he cannot be the father because testing determined that he and the child do not share a biological parent/child relationship.
• IS NOT EXCLUDED: Means that he is likely to be the biological father because testing determined that he and the child do share a biological parent/child relationship with a high degree of probability.

A paternity test result includes a table that lists:

• The allele sizes of the different DNA markers examined and used in the statistical analysis portion of the test (i.e., the DNA profile)
• A Probability of Paternity value
• A Combined Paternity Index (CPI) value

You will want to focus on the probability of paternity percentage. A result of 0% means the alleged father is not the biological father; a result of 99.99% or higher means the alleged father is likely to be the biological father. The CPI value represents the odds against another random, unrelated, untested male in the population having the same results as the tested man. IMPORTANT: Paternity testing is calculated using statistics. Therefore, a probability of paternity can never be 100%, because that perfect score would require testing every man on earth with the same racial background of the man tested—which isn’t possible. A probability of 99%+ is considered conclusive for paternity.

We accept the following forms of payment:

• Visa
• MasterCard
• American Express
• Pre-paid credit cards
• Postal orders
• Cashier’s checks

As part of our mission to make the best DNA testing services accessible and affordable, we offer flexibility for individuals who need time to pay for their tests. For more information, ring us on 020 3301 7346.

We take our customers’ privacy very seriously: both for your case and your DNA data.

• We will not release any information about your case to anyone without your authorisation
• We will always follow any special instructions you give us for communicating with you or other parties involved in your test
• We never release test results over the telephone

SEE OUR FULL PRIVACY POLICY