Paternity Testing (including Twin Zygosity Testing)

Genetic paternity testing is undertaken to confirm or exclude an adult male as the true biological father of a child. Exclusion is essentially absolute, whilst confirmation typically provides >99.999% certainty.

Twin zygosity testing involves comparing genetic profiles obtained from same sex twins. Dizygosity confirmation is absolute (demonstrating that the twins are non-identical). Monozygosity confirmation (demonstrating that the twin are identical) typically provides >99.999% certainty.

The technique we employ for these assays utilises the latest technology and is based on assessing the inheritance of 15 highly polymorphic (variable), independently segregating loci from across the human genome. See table below:

D13S317
13q22-31
D21S11
21q11.2-21
D7S820
7q11.21-22
THO1
11p15.5
D16S539
16q24-qter
D2S1338
2q35-37.1
D8S1179 8 TPOX
2p23-2pter
D18S51
18q21.3
D3S1358 3p CSF1PO
5q33.2-34
vWA
12p12-pter
D19S433
19q12-13.1
D5S818
5q21-31
FGA 4q28  

Paternity testing costs £300.00 (plus VAT) and includes up to 3 specimens (either whole blood or cheek swabs can be accepted). Thus ‘motherless’ testing (child and putative father) incurs the same charge as ‘mother, child and putative father testing’. Additional specimens (e.g. more than one child) will be charged additionally per specimen.

Please note the following: in order to comply with the UK Department of Health code of practice (March 2001), ‘motherless’ testing will only be undertaken with the mother’s written consent. It should also be noted that results are provided for information purposes only, should they be required for use in legal proceedings, the collection of samples must be supervised to satisfy legal criteria. In such cases, individuals should approach their solicitor or a family law specialist first.