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Order your DNA Siblings Test. We also perform grandparentage, avuncular and Y chromosome DNA testing.

DNA Relationship Testing

easyDNA offers a wide range of DNA Relationship Testing services. Our tests start from as little as $495 and cover a wide range of relationships including DNA Siblings Testing for siblings of both sexes, as well testing between Aunt/Uncles and Grandparents. The relationship test can therefore be used to determine if two or more individuals share a biological relation and are related.

Relationship testing is mostly applicable when one of the alleged parents is unavailable or unwilling to participate in a DNA Paternity Test. For example, if two siblings want to know if they are related and the common parent is not available, then a DNA Siblings test can be performed to determine if they share a biological relationship.

Relationship Testing is however a bit more complex than the standard paternity testing, therefore each case should be discussed in advance with the technical staff of easyDNA who will guide you on the most appropriate test. Depending on the relationship and sex of the individuals participating in the test, there are several testing methodologies that can be used. An explanation of the various DNA testing methodologies is provided below.

easyDNA Offers the Following Type of Testing:

DNA Testing: Sibling DNA Test

The DNA Siblings Test can be used in situations where two or more alleged siblings wish to determine whether they are biologically related or not, as well as possibly confirming if they are either full or half siblings. This type of test can be performed without the sample of the parent, however when testing for half siblings, we recommend that the samples of the known parent/s (normally the Mother) are also included to strengthen the results of the test.

Siblingship testing is priced from $495. Results are available in 5-7 working days receipt of samples at the laboratory. We recommend that you contact us in advance to discuss your case.

Grandparentage DNA Testing:

The Grandparentage test can be used to determine the biological relationship between grandparents and an alleged child. This test is mostly applicable in situations where the alleged father of the child is unable (e.g. deceased) or unwilling to participate in a DNA Paternity test. In such cases, we will test the parents of the alleged father to determine if they are the biological relatives of the child, thereby confirming the paternity of the alleged father.

For this test, we strongly recommended that both grandparents participate to strenghten the results and obtain a more conclusive result. If this is not possible, then you can proceed to test only one of the grandparents. The sample of a common parent (normally the Mother) is also recommended to strengthen the results of the test.

Our Grandparentage test is priced from $495. Results will be sent to you within 5-7 working days from the day we receive the samples at the laboratory.

Avuncular DNA Testing (Aunt/Uncle Testing):

Avuncular testing can be used to confirm whether a person is the biological Aunt or Uncle of another individual. This type of case is often used when there is a need to confirm the paternity of a child, however the alleged father is unavailable or unwilling to take part in the test. In this case, we can test a brother of sister of the alleged parent as they share some DNA in common. As with all Relationship Testing, the sample of the Mother is recommended where available to strengthen results.

Avuncular testing starts from as little as $495. The results will be available within 5-7 working days from the receipt of samples at the laboratory.

DNA Testing Methodologies

STR Analysis – Testing for Full or Half Siblings

A brother to sister DNA sibling Test analysis a very large number of different DNA points (known as loci) in the persons tested. Full siblings and half siblings of course share a lot more DNA in common than do unrelated persons. Of course half siblings do not share as much as full siblings. The purpose of this test is therefore to look at the amount of DNA shared in common and to apply statistical analysis to deduce the biological relationship.

Because the analysis is based on a comparison on common DNA, it is always best to submit the sample from any known parent/s of the person/s being tested. This will drastically help the evaluation process as it allows for a more accurate identification as we can then separate the maternal and paternal DNA of the individual being tested.

Y-Chromosome Testing – Testing to Determine Male Relatives

Y-STR Testing is used to determine if two males share the same paternal lineage. It can also be used in cases where male cousins want to see if their fathers were brothers or to check if they shared a common Grandfather through the paternal line. The Y chromosome is inherited and passed on from father to son through the generations. Since it has a relatively infrequent mutation rate, it will remain the same through many generations. It is only broken by the birth of a Daughter but if a direct male line can be concluded then all males in that direct male lineage will have the identical Y pattern. Y-STR testing is priced from $495 for two males to be tested.

X Chromosome Testing – Testing to Determine if Two Alleged Sisters with Different Mothers Have the Same Father

X chromosome testing is helpful in the case where two women believe they share the same Father. Each female has two X chromosomes, one that was inherited from the Mother and the other that was inherited from the father. In a case where two females think they have the same father but are certain they have different Mothers then through this test, if their X chromosome patterns match, it means that they do share the same father.

In cases where two females share the same Mother we can still participate in X chromosome testing but only if the Mothers sample is available for testing. This way we can see the X pattern that was inherited or passed on from the Mother and then compare the second X pattern that would have been passed on from the father.

If the two Sisters do share the same Mother and can not submit her sample, then the alternative option for testing would be to do a full sibling STR test to determine if they were full or half siblings.

The X-Test is priced from $495 for two females to be tested.

X-SV Maternal Lineage Test - Testing to Determine Whether Two or More People are Related Through their Maternal Lineage

This test can be used to determine whether two or more people are related through their maternal lineage, or if male and/or female children have the same biological mother. The test is based on the Mitochondrial DNA sequence variation that is passed from females to their siblings. Since this has a relatively infrequent mutation rate, it will remain the same through various generations. Males do not pass the X-SV they inherited from their mother to their children.

This DNA test therefore focuses on the Mitochondrial DNA and the result is based on the generation of a unique X-SV profile for each person tested. It is important to highlight that this test will not differentiate women from the same maternal lineage or children that have the same mother.

The cost of this test is $495. The turn-around time for this service is 19 - 21 business days (faster times are available, if you select the Express option).

Please refer to our Order DNA Test Page for further information about the complete list of Relationship Tests available. If you would like to discuss you case in advance. we suggest that you contact us via email, phone or else directly on Live Chat.

To see how easy it is to collect your DNA samples, we suggest that you visit our online instructions guide  DNA Sample Collection Guide.  However, if you do plan to use our DNA testing kit and would like to submit a sample that is not an oral swab, we suggest that you visit our DNA Forensic section for more information.

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