dadcheckgold - DNA testing services

Call us today:

0191 543 6334

0203 603 1323

DNA Testing for Twins

dadcheck®gold is able to provide DNA testing services to determine whether two people are related as:
  • Fraternal twins / non identical twins (dizygotic)
  • Identical Twins (monozygotic)
Fraternal twins are conceived when two eggs (ova) are fertilised by two sperm to produce two individuals with different DNA profiles. These two individuals will share the same genetic relationship as siblings born at different times. Therefore, statistical calculations should indicate a full sibling relationship. Ideally, the mother, father or both parents should participate in this test to improve the result.
In identical twinning an egg (ovum) is fertilised by a single sperm. The fertislised egg then splits and two embryos develop independently. These two individuals will have identical copies of DNA. For identical twins and using short tandem repeat (STR) DNA technology, we would expect the DNA profiles to be identical and match at every marker tested. 
If you would like to discuss a case, request a quotation or place an order, please feel free to call us on either 0191 543 6334 or 0203 603 1323 or send an e-mail to We will be pleased to answer any questions you may have and to advise on the best testing scenario for your client(s).

Download a Quotation Form Here

Alternatively, please complete and return the downloaded form by either;
  • a) e-mail to
  • b) mail to Complement Genomics Ltd (dadcheck®gold), The Durham Genome Centre, Park House, Station Road, Lanchester, Co. Durham, DH7 0EX.

We are one of only a few companies in the UK which are able to provide a DNA testing service suitable for legal purposes. The dadcheck® service is accredited by the Ministry of Justice as a body that may carry out parentage tests directed by the civil courts of England and Wales under section 20 of the Family Law Reform Act 1969.

© Complement Genomics Ltd.

Registered Office: The Durham Genome Centre, Park House, Station Road, Lanchester, Co. Durham, DH7 0EX.

Registered in England No. 3929876.