Twins Research Australia receives many queries from twins and their families interested in zygosity testing to determine whether a particular twin pair is identical (monozygotic or MZ) or non-identical (dizygotic or DZ).
Quite often, parents are misinformed during pregnancy and at birth regarding their children's zygosity - as prenatal scans displaying one or two placentas are not a reliable means of determining whether twins are identical or not (please read this research piece for more information).
If twins are the same sex and each have a placenta, or if there is doubt about the type of placenta, they could be identical - or non-identical twins. The best way to be certain is to do a zygosity test.
The two most popular methods of acquiring the DNA samples needed to determine zygosity (i.e. whether twins are identical or non-identical) are by collecting blood or cheek cell samples.
An Australian organisation, EasyDNA, now provides one of the most competitive discounted zygosity testing rate available - which is exclusive to TRA members. They offer twin zygosity DNA testing via a cheek swab with results within just 7 working days. Your test kit will be posted to you. The company has been operating in Australia since 2006 and has offices in Brisbane, Melbourne, Sydney and Perth. They can provide testing anywhere in Australia exclusively through their NATA and ISO 17025 accredited laboratory. Please read EasyDNA's Terms and Conditions prior to placing your order with them.
Their special discount, of $79 off their usual rate of $199, is available to members of Twins Research Australia only. EasyDNA will also include prepaid express return envelopes with the test kits - an offer provided exclusively to TRA members! Please note that TRA membership is free; to learn more about how to join us please visit our join us page.
To request a zygosity test and obtain the special $120 rate, you simply need to:
* If ordering a kit by phone (1300 482 165) please inform the customer care agent that you are a TRA member and provide your TRA ID. Your discount will be applied once your ID has been verified by us.