Twin Zygosity DNA Testing £119.00 How would you like to receive your results? * Select an option... Email (standard) Email + Hard Copy (+£10.00) Need Express results in 3 working days (from receipt of samples at the lab)? * Select an option... No Yes (+£99.00) Would you like to include additional siblings? * Select an option... No Yes, 1 additional sibling (+£70.00) Yes, 2 additional siblings (+£140.00) Twin Zygosity DNA Testing quantity Add to basket * Required field