*Due in part to recent additional laboratory licensing fees, this price may be different from a price in previously published advertisements.

Contents of a Twin Zygosity Test Kit:
(2) sets of ten cotton swabs
(2) labeled vials with storage solution
(1) set of buccal swab instructions
(1) protective bubble-wrap envelope
(1) prepaid First Class Mail return mailer (U.S. only)

Shipping Options
~ Parents of twins who live with the twins may select the shipping option: "Yourself". Both swab kits will be sent to one address.
~ For twins who live apart, choose shipping option "Each Multiple Separately" and 2 addresses can be specified.

Other Details
~ Prepaid return postage not available for non-U.S. orders.
~ Commercial accounts for twins' studies are available for discounted bulk orders for twin zygosity test kits.
~ All prices are in U.S. dollars.
~ Exchange rates can be calculated here.