DNA Sample Collection Procedure
DNA sample collection is a crucial step in paternity testing, as it provides the genetic material needed to determine the biological relationship between a child and an alleged father. Several methods are available for collecting DNA samples, but the most common and preferred method is using mouth swabs.
Mouth Swabs: The Preferred Method
Mouth swabs have become the preferred method for DNA sample collection in paternity testing due to their numerous advantages over blood samples. The process is easy, painless, and non-invasive, making it suitable for individuals of all ages, including infants. Despite the difference in collection methods, mouth swabs provide the same accurate results as blood samples.
To collect a DNA sample using mouth swabs, a foam-headed swab is rubbed inside the cheeks and along the gumline to capture cells containing DNA. The DNA is then transferred onto archival paper for safekeeping and transportation. Archival paper protects the DNA sample from potential damage caused by bacteria and fungi, ensuring its integrity during storage and shipping without the need for special storage requirements.
Blood Samples: Used in Specific Cases
Although mouth swabs are the preferred method, blood samples may be used in specific situations for paternity testing. One such case is when a parent has passed away, and a blood sample was collected during an autopsy. In this scenario, the blood sample can be used to establish paternity posthumously.
DNA Sample Collection Procedure
To ensure successful saliva sampling using mouth swabs, it is essential to follow the provided instructions carefully. The swabs should be labeled correctly with the donor’s information to avoid mix-ups. When collecting the sample, it is crucial not to touch the cotton-ended part of the swab to prevent contamination. All provided swabs should be used for each person to ensure an adequate amount of DNA is collected.
Before collecting the sample, individuals should avoid eating, drinking, and smoking for one to two hours to minimize the presence of foreign substances in the mouth. When collecting samples from infants, special considerations must be taken. It is recommended to wait at least an hour after the infant’s last feed and to rinse their mouth with lukewarm water before swabbing gently.
After collecting the DNA samples, the swabs should be dried and packaged according to the provided instructions for transportation. The samples are then sent to a laboratory for analysis, where the genetic material is extracted and compared to establish paternity.
Conclusion:
Mouth swabs have become the preferred method for DNA sample collection in paternity testing due to their ease of use, non-invasive nature, and ability to provide accurate results. By following the correct procedure and taking necessary precautions, individuals can ensure that the DNA samples collected are of high quality and suitable for analysis.
With the advancements in DNA technology, paternity testing has become more accessible and reliable, providing answers to important questions regarding biological relationships.
