Your DNA test in 5 steps
Order Online
Order your DNA test online and add your options if necessary.
We ensure activation with the partner laboratory.
Receive your instructions by email
No kit is sent. You receive all instructions directly by email: client codes, forms, procedures, and the laboratory address.
Collect at Home
Easily perform your home sample collection using a simple buccal swab to collect a saliva sample.
Send to the laboratory
Place your samples in paper envelopes and send them to the laboratory following the instructions provided in the email.
Receive your results
Receive your results by email within a few days.
Options
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Additional participant: +€99
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Non-standard sample (hair, nails…): +€69
Timelines
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Buccal swabs: 5–7 days after receipt
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Non-standard samples: 10 days or more
Garanties
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Analysis of 21 genetic markers
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Laboratory accredited to ISO 17025
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The sibling test is an indirect test based on statistical probabilities. Inconclusive results are possible.
Who can participate?
Siblings
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From birth, at any age
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The test can be done between half-brothers and half-sisters
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For a maternity search between siblings or half-siblings, we recommend using: the mitochondrial DNA test which is much more reliable in this case
Brothers
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The test can be done between half-brothers
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For a paternity test between two brothers or half-brothers, it is recommended to use: the Y Chromosome test
Sisters
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The test can be conducted between half-sisters
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For a maternity investigation between two sisters or half-sisters, it is advisable to utilise: the mitochondrial DNA test
The Involvement of a Parent in a Sibling Test
A sibling DNA test is based on the comparison of genetic profiles from multiple individuals. Full siblings share approximately 50% of their DNA, while half-siblings share around 25%, as genetic transmission is derived equally from both the father and the mother.
When feasible, it is strongly recommended to include the DNA of a biological parent. This enables the laboratory to immediately exclude a portion of the child's genetic heritage and to focus the analysis on the relationship in question.
Result: more reliable and precise conclusions.
In general, the more genetic information available, the more conclusive the sibling test will be.
Types of Sibling DNA Tests
In the context of a sibling DNA test, several statistical analyses may be conducted. The type of test depends on the declared family situation and the available participants. There are three main types of DNA tests for siblings.
The Comprehensive Sibling Test
This test compares the DNA of two individuals to determine the probability that they share the same biological father and mother, compared to a total absence of kinship.
It is used when participants assume they are full siblings.
The participation of a known biological parent is strongly recommended to increase the accuracy of the results.
The half-sibling test
This test is conducted when two individuals share a single biological parent (either the father or the mother).
The analysis compares genetic profiles to assess the likelihood that the participants have:
- the same biological father, or
- the same biological mother.
To enhance reliability, laboratories recommend including at least one known biological parent, whenever possible.
The half-sibling test without declared kinship
This test is utilised when participants have different biological parents but wish to verify the existence of a possible sibling relationship.
The DNA of the participants is compared to determine the probability that they share:
- a common biological father, or
- a common biological mother.
In this type of analysis, the involvement of one or ideally both known biological parents allows for more accurate and reliable results.