Affiliation
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Molecular expert examination of filiation is carrying out with the help of certain DNA amount (locuses) analysis. The medical laboratory EUROLAB takes for analysis:
The samples can be taken by yourself or you can commit it to EUROLAB specialists. This method is mostly used in affiliation. Technical peculiarities of such tests lie negative result |
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reliability always of 100% (false response “You are not father” is excluded), in the same time positive result accuracy can aim only at 100% and the highest possible value accessible now in the medical laboratory EUROLAB is 99.9999%. In other words the probability that child genetic qualitative characteristics accidentally will agree with someone’s else who is not his father average 1 of a 1000 000. To produce such a result our specialist will have to analyze 22 DNA sites (locuses). Inasmuch as result accuracy is in direct relation with a quantity of analyzed DNA locuses we will propose soon to our clients opportunity of 37 locuses analysis. Such analysis lie 1/10 000 000 of accidental agreement chances.
100% probability of positive result is impossible because not all of the existing locuses are analyzed. That is why the theoretical possibility is always present that the non-analyzed locuses lie convergences which can cancel the positive result. The standard practice in forensic medical examinations is 14-16 locuses analysis which can give accuracy of 99.9% . This result is recognized by a court of low with a sentence “the paternity is almost proved”. 16 locuses is a minimal number analyzed in the medical laboratory EUROLAB.
A child will inherit his own locus variants from his mother and from his father. That is why the availability of mother’s samples facilitate considerably the analysis because we can check which mother’s locuses have coincided with presumptive father’s ones. The coincidence of these locuses in a child and his father is not surprising because a child inherited it from his mother. In such cases only the locuses which were not coincided in both parents are taking into account. Nevertheless two samples are enough for the test (from a child and his presumptive father, if mother’s samples are also available its analysis is free of charge). The presence of a greater locuses number is desirable for higher test accuracy.
