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Clear the Genetic
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Instantly analyse blood group compatibility. A scientific, fast and private method for paternity exclusion.
Take the testHow does the analysis work?
BioPaternal applies Mendel's laws to check whether the ABO, Rhesus and Kell blood groups are genetically compatible between the mother, the child and the alleged father. The analysis is computed securely and is never stored.
Is my data stored?
No. Your blood groups are never stored or logged: they're used only for the moment it takes to compute your result, then immediately discarded. No biological data can identify you or reconstruct a test.
Is the result legally valid?
No. This test is informational only. It can exclude paternity with biological certainty, but can never prove it. Only a DNA test performed in an accredited laboratory has legal value.
What is the Kell system?
The Kell system is a third blood group (antigen K). Enabling this option increases the exclusion power of the analysis, but it requires a specific blood test — it's rarely shown on a standard blood group card. If you're unsure of your Kell status, leave this option off rather than guessing.
How long does the analysis take?
The genetic analysis is near-instant: the result is computed as soon as the form is submitted.
If there's an exclusion, is there reason to believe it?
Estimated reliability: over 99.9% for an exclusion found on the ABO or Kell systems, over 99.5% for the Rhesus system, which is more sensitive to genetic variants. In other words: yes, in the vast majority of cases, an exclusion found by this test means the alleged father is indeed not the biological father. The genetic anomalies capable of mimicking a false exclusion (Bombay phenotype, weak or partial Rhesus variants, chimerism, rare mutations) remain uncommon. This estimate assumes correctly entered blood groups; when in doubt, only a DNA test can settle it definitively.
What does an informative compatibility result mean?
A compatible result NEVER proves paternity — it only means the blood groups did not rule it out. In that case, a DNA test would be more appropriate.
Can a laboratory error affect the test?
Yes. The result depends entirely on the accuracy of the blood groups entered. A typing, handling or transcription error during the laboratory analysis can distort the verdict. Check your groups on your blood group card or a medical prescription before running the analysis.