How Can My Paternity Test Samples Get Messed Up?

Paternity tests are often used to determine the biological relationship between a man and a child. The tests compare DNA samples from the alleged father and child to establish paternity. While paternity testing is often reliable and accurate, there are instances where the samples used for testing can become compromised, resulting in inaccurate results. This is true whether you are using an at-home paternity test or a relationship DNA test conducted by a professional laboratory. This blog post will explore how paternity test samples can get messed up, focusing on non-invasive DNA testing in Pearland.


Contamination of DNA samples is one of the most common reasons for inaccurate paternity test results. Contamination can occur when foreign DNA is introduced into the sample, such as from the swab or container used to collect the sample or from the hands of the person collecting the sample. To avoid contamination, it is essential to follow proper sample collection procedures. This may include wearing gloves, using sterile collection swabs and containers, and avoiding touching the swab or container with your hands. Additionally, it is essential to ensure that the sample is properly stored and transported to the testing laboratory to avoid any potential contamination during transit.

Sample mix-up

Another potential source of error in paternity testing is sample mix-up. This can occur when samples are mislabeled, mishandled, or improperly stored. For example, if two samples are mislabeled, the test results may show that the biological father is someone other than the alleged father. Labeling and handling the samples properly is important to avoid sample mix-ups. This may include marking the samples with the correct information, storing the samples in a secure location, and adequately transporting the samples to the testing laboratory.

DNA degradation

DNA degradation can occur when samples are exposed to extreme temperatures, light, or moisture. This can result in the breakdown of the DNA molecules, making it difficult or impossible to obtain accurate test results. DNA degradation can also occur over time, especially if the samples are not stored properly. Storing the samples in a cool, dry place, away from direct sunlight and extreme temperatures, are important to avoid DNA degradation. It is also important to use DNA collection and storage kits specifically designed to protect the DNA from degradation.

Human error

Human error is another potential source of error in paternity testing. This can include mistakes made during sample collection, handling, labeling, or testing. For example, the results may be inaccurate if the wrong amount of DNA is used for testing or if the process needs to be done correctly. To minimize the risk of human error, it is important to follow the proper sample collection and testing procedures and to use trained professionals to collect and analyze the samples. Additionally, it is important to use accredited and reputable testing laboratories that follow strict quality control procedures to ensure accurate results.

How to avoid messing up your paternity testing

To get accurate results in DNA testing, it is important to follow specific guidelines and choose a reputable testing provider. Here are some tips:

Choose a reputable testing provider: It is important to choose a testing provider that has a good reputation for accuracy and reliability. Look for companies accredited by your country’s relevant regulatory bodies.

Use a relationship DNA test: If you are trying to establish a relationship with someone, such as a paternity test, use a relationship DNA test. These tests compare the DNA of two or more people to determine if they are related.

Follow the instructions carefully: Be sure to follow the instructions provided by the testing provider carefully. This will ensure that the sample is collected correctly and is not contaminated, which can lead to inaccurate results.

Consider non-invasive DNA testing: Non-invasive DNA testing, such as a cheek swab, is a simple and painless way to collect DNA samples. This method is also less invasive than blood testing or other methods that may be uncomfortable or painful.

Consult a genetic counselor: If you have concerns about the accuracy of DNA testing or the results, consider consulting a genetic counselor. They can help you interpret the results and provide guidance on what to do next.

In Non-invasive DNA testing in Pearland, a small blood sample is taken from the mother, and a cheek swab is taken from the alleged father. The blood sample is analyzed to identify fetal DNA, then compared to the DNA of the alleged father. This type of testing is considered highly accurate and reliable, with a 99.9% accuracy rate. However, it is still important to follow the proper sample collection and testing procedures to avoid any potential sources of error.In conclusion, paternity testing is a reliable and accurate way to determine biological relationships, but potential sources of error can compromise the results. To ensure accurate results, it is essential to follow proper sample collection, handling, and testing procedures and to use accredited and reputable testing laboratories. Whether you are using an at-home paternity test or non-invasive DNA testing in Pearland.

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