What Happens If You Think Your DNA Test Result Is Wrong?
What Happens If You Think Your DNA Test Result Is Wrong?
February 26, 2025
DNA testing has become one of the most reliable ways to establish biological relationships, trace ancestry, and even provide insights into health risks. However, sometimes, individuals receive DNA test results that don’t align with their expectations. If you suspect that your DNA test result is wrong, it can lead to confusion, frustration, and even significant emotional distress. So, what should you do if you think the results of your test are incorrect?
In this blog, we’ll explore common reasons for wrong DNA test results, how to confirm whether the results are accurate, and what steps you should take if you believe your results are incorrect.
1. Can a DNA Test Be Wrong?
While DNA testing is one of the most accurate forms of analysis, no process is completely infallible. In most cases, the results are highly reliable, but there are a few situations in which DNA test results might seem inaccurate or be challenged. Here are some factors that could lead to a wrong result:
A. Sample Contamination or Handling Errors
One of the most common reasons for incorrect DNA results is sample contamination. DNA samples are delicate and need to be handled carefully. Contaminants like saliva, food particles, or even fingerprints can affect the quality of the sample and potentially lead to erroneous results.
B. Lab Processing Mistakes
Though rare, lab errors can happen. For example, the samples could be mislabeled, or there could be mistakes during the analysis process. This is especially true in high-volume labs that handle hundreds or thousands of tests daily.
C. Low Fetal DNA in Prenatal Paternity Tests
For prenatal paternity tests (done through blood work during pregnancy), the accuracy of results depends on the amount of fetal DNA circulating in the mother’s bloodstream. If the DNA sample from the fetus is too low, it might affect the test’s reliability.
D. Misinterpretation of Results
Sometimes, the results may be accurate, but they are not fully understood by the person receiving them. For example, genetic mutations, rare conditions, or variations in genetic markers might cause confusion. It’s important to understand the scientific context of your results.
2. Steps to Take If You Think Your DNA Test Is Wrong
If you believe your DNA test results are wrong, it’s important to stay calm and take the appropriate steps to clarify the situation.
Step 1: Review the Test Instructions
Before jumping to conclusions, double-check that you followed all the sample collection guidelines. Mistakes during the collection process (e.g., eating, drinking, or chewing gum before a saliva test) can lead to contaminated samples and skewed results.
Step 2: Confirm the Test Type
Make sure that the correct test type was performed. For instance, if you need a legal paternity test but accidentally ordered a home test, the results may not be admissible in court, leading to the appearance of a “wrong” result.
Step 3: Contact the Testing Company
If you’ve followed all the instructions correctly and believe the results are still incorrect, reach out to the testing company. Reputable companies will have a customer service department that can review your test details and check for possible issues.
- Ask for a review of the test process, from sample collection to processing.
- Request a retest if there was an error in the initial test or sample handling.
Step 4: Request a Retest
If the testing company agrees that there may have been an error, they may offer a free or discounted retest. This is especially true if there was an issue with sample quality, lab errors, or insufficient fetal DNA for prenatal tests.
Step 5: Double-Check With Another Lab
If the company refuses a retest or you still doubt the results, you may want to consider sending another sample to a different lab. Many DNA testing companies offer to perform a second test for confirmation. Choose a well-established, accredited lab for your retest to ensure the most accurate results.
3. What If the Results Are Correct but You Disagree With Them?
It’s not uncommon for people to receive DNA test results that are emotionally difficult to process, especially when the results challenge long-held beliefs or assumptions. For instance:
A paternity test may show that the presumed father is not the biological father.
An ancestry test might reveal unexpected genetic connections.
If you believe the result is correct but still struggle with the emotional consequences, consider:
Seeking professional guidance: It may be helpful to consult with a counselor or genetic counselor to process the information and work through any emotional difficulties.
Discussing the results with a trusted individual: Talking to someone you trust can provide support during a difficult time.
Legal DNA Test Procedures Explained
A. Legal Chain of Custody
Make sure the test was conducted under proper chain-of-custody procedures, especially if it’s for a legal or immigration purpose. Without this, the results may not be legally valid, even if they appear correct.
B. Confirming with a Legal Test
For legal matters, you may need to retest through a court-admissible testing service that follows the required legal protocol for collecting, storing, and processing the sample.
5. How to Avoid Errors in Future DNA Tests
To avoid mistakes or confusion in future DNA tests, consider these tips:
Choose a reputable, accredited lab: Make sure the company is CLIA-certified and adheres to strict industry standards.
Follow instructions carefully: Be diligent about the sample collection process and follow the instructions exactly.
Understand the test type: Know what kind of test you are getting and make sure it fits your needs (e.g., legal vs. non-legal, prenatal vs. ancestry).
Final Thoughts: What to Do If You Think Your DNA Test Result Is Wrong
While it’s rare, DNA test results can sometimes be incorrect due to human error, contamination, or misinterpretation. If you believe the result is wrong, it’s important to:
Review the collection process and test type.
Contact the testing company to clarify the issue.
Request a retest or confirm with another accredited lab if necessary.
Ultimately, if you follow the proper steps, you can usually get to the bottom of the issue and gain clarity. Don’t hesitate to seek assistance if needed.