Full sibling to sibling DNA testing. Testing siblings as biological relations.

Option 1. Full Siblingship Test – to establish whether or not siblings share the same mother and father.



			Accuracy of 90+% To establish whether or not a brother and sister have the same father AND mother. High number of DNA regions analysed Uses DNA statistics to evaluate the amount of DNA sharing and to deduce a biological relationship. Full siblings have a lot more DNA in common than half siblings. Half siblings share more DNA than unrelated persons. For a higher accuracy, include DNA samples from parents or other siblings. This allows us to pinpoint the exact origin of each sibling's DNA. If you wish to test 2 or more brothers, the Y chromosome may be a cheaper option. Click for brother to brother testing options. If you wish to test 2 or more sisters, please see our sister to sister page.



			Accuracy of 99+% To establish whether or not a siblings have the same mother only. We sequence specific areas of DNA only inhertited from the mother (mitochondrial DNA). We use most respected and most widely used mitochondrial DNA analysis software in the world. All siblings to the same biological mother will have the exact same mitochondrial DNA sequences. If you wish to test 2 or more brothers, the Y chromosome may be a cheaper option. Click for brother to brother testing options. If you wish to test 2 or more sisters, please see our sister to sister page.

Summary of Mitochondrial DNA costs: £235 (£75 for each extra person)