At-Home Twin Zygosity Test Kit Twins At-Home Twin Zygosity Test Kit Was Now $299.99 Sale This is home peace of mind test helps to determine if twins are fraternal or identical.NOTICE FOR NEW YORK STATE RESIDENTS: New York State prohibits the shipment of home paternity testing kits to addresses within the state; orders will be canceled and refunded minus a $50 fee. We apologize for the inconvenience caused by these regulatory requirements. Quantity Enter an amount $ Add to Cart Add to Cart