DNA SAMPLE COLLECTION (SWAB vs BLOOD)
In recent years, there has been a common misconception that DNA relationship tests can only be performed using blood samples. This has led some to believe that blood collections are more accurate than cheek swab samples for DNA testing.
However, this is not the case. Both blood and cheek swab samples can provide similarly accurate results for DNA relationship testing. In this article, we’ll discuss the differences between these two sample collection methods, their respective pros and cons, and their level of accuracy.
Buccal Sample Swab Collection
Cheek swab samples are currently the most commonly used collection method for DNA relationship testing. This non-invasive approach has several advantages:
Pros:
- The process is painless, so it’s preferable for those with a fear of needles or who dislike pain.
- Samples can be easily self-collected and transported to the lab.
- No phlebotomist is required.
- Can be used with At-Home DNA Tests
Cons:
- Care must be taken to fully air-dry the swabs before packaging to prevent contamination that could compromise the samples.
Collection Method
Two sterilized cheek swabs are placed inside of the mouth and brushed against the cheek for 30 seconds. Once on the left and once of the right cheeks. After each has been swabbed, the DNA collector will place the swab in the designated envelope.
Use Cases:
Cheek swabs can be used for the following relationship tests:
- Paternity testing
- Maternity testing
- Sibling testing
- Grandparent testing
- Avuncular (aunt/uncle) testing
In summary, blood draws remain a viable option for DNA relationship testing, but offer minimal benefits compared to cheek swabs, which have become the standard method due to being painless, inexpensive, and easy to self-collect.
Blood sample collection for DNA Testing
In the past, blood draws and finger pricks were the original methods used for DNA sample collection. Today, these techniques are less common due to advances in DNA testing technology.
Pros
- Can still effectively provide DNA for paternity and relationship testing.
Cons:
- More expensive due to supplies and trained staff needed.
- Much more painful and invasive than cheek swabs.
- It cannot easily be self-collected.
- More delicate sampling that requires safer handling and packaging.
- Cannot be used with At-Home DNA Tests
Turnaround Time:
- Results are typically available within 3-5 business days after the lab receives the blood samples.
Use Cases:
Blood and finger pricks can be used for:
- Paternity testing
- Maternity testing
- Sibling testing
- Grandparent testing
- Avuncular (aunt/uncle) testing
- Non-invasive prenatal paternity testing
However, many DNA testing companies no longer offer these collection methods given the minimal benefits compared to cheek swabs.
In summary, while blood collection for DNA testing is still an option, cheek swabs have become the standard method due to being painless, inexpensive, and easy to self-collect. Blood draws remain viable but are less ideal for relationship DNA testing.
Conclusion:
In conclusion, while blood collection remains a viable option for DNA relationship testing, cheek swabs have emerged as the preferred method due to their distinct advantages:
- Painless and non-invasive: Ideal for those with needle aversion or discomfort.
- Easy to self-collect and transport: Enhancing convenience and accessibility.
- Cost-effective: Eliminating the need for trained personnel and specialized supplies.
- Suitable for at-home testing: Empowering individuals to conduct tests independently.
- Highly accurate: Offering results comparable to blood samples.
Although properly drying cheek swabs is crucial to prevent contamination, reputable labs implement stringent quality control measures to ensure reliable results.
If you need reliable and accurate DNA relationship testing services call IDTO DNA Testing Center at 888-204-0583 to schedule an appointment.
