To establish whether or not a brother and sister have the same father AND mother.
Summary of Sibling to Sibling Testing Costs: £299 (mother's DNA included for free)
DNA Test |
With Mother's DNA |
Accuracy |
Cost |
Order |
| Brother to Brother (2 persons) |
with no Mother's
sample |
90% |
£299 |
|
| Brother to Brother (3 persons) |
with 1 Mother's sample |
95% |
£299 |
|
| Brother to Brother (4 persons) |
with 2 Mother's sample |
99% |
£398 |
Summary of Mitochondrial DNA costs: £199 ( £99 for each extra person ) 
No. of persons |
Accuracy |
Cost |
Order |
| Sister to Brother (2 persons) | 99% |
£199 |