If you are thinking that if you can use a sibling DNA test for immigration, then yes, you surely can. If the sponsor is a sibling, then the authorities will most likely need a DNA proof in along with any other documented proof. Both full and half sibling DNA test can now commonly be used as an evidence of relationship between the brothers and sisters.
How Does the Probability of Relationship Work with a Sibling DNA Test?
Unlike the DNA paternity tests that offer 99 percent or higher or 0 percent probability of relationship as only two outcomes, the sibling testing is determined on the basis of a percentage of a probability test that can fall under anywhere ranging between 0 to 99 percent. If the result is more than 90 percent, then this is considered an evidence that the sibling relationship is legit. Anything falling under 9 percent signifies that it doesn’t. An outcome between these two figures is deemed inconclusive.
Sibling DNA Tests for Immigration Purposes
Most individuals going through an application or appeals process will have engaged a solicitor specializing in immigration, so it is always a good idea to clarify with them the need of any DNA tests that you plan on conducting. Consider these factors listed below:
- Ensure that the lab you are working with is accredited by the concerned authorities and boards.
- You or your solicitor can make a request for testing from an accredited lab if the test is not for passport purposes.
- If you are conducting a sibling DNA test because of passport applications, the passport office will advise you which lab you should approach when you need to book the appointment for sample collection. I-DNA has got you covered.
- Wherever possible, always include the mother of the siblings at all costs. If the siblings have different months, try to include both of them, if possible. The test still costs the same, but there must be an additional fee involved. But when you include the mother in the sibling DNA test, it can immensely improve the probability percentage in the positive tests.
- When it comes to choosing a lab for DNA paternity test, make sure they test at a minimum of 20 markers and feel free to ask if they can test extra panels of makers if needed.
Taking the Test
Once the test is begun, you and your potential sibling will be given a testing kit, and it will also be given to other family members who are participating. The kits will have cheek swabs to collect the buccal or cheek cells samples from the inside of your cheek. Gathering a sample by this method is totally painless and only take a few minutes. It will also have containers to keep the used cheek swabs in which will be helpful in keeping all the contamination at bay.
To have the most effective results, to know if you most definitely share one percent with your potential sibling, we suggest you to include the mother in the process. It helps in differentiating between the shared DNA from the alleged parent and the DNA you probably sharing from the alleged parent.