Twin Testing

New Zealand’s only locally based twin testing service

Twin zygosity test

Twin zygosity testing is used to determine whether twins or other multiples are identical or not. Identical twins share identical DNA, while non-identical twins do not. The twin zygosity test is sometimes carried out to satisfy a parent’s or adult twins’ curiosity, or for health reasons.

Cost of twin zygosity testing:

$172.50 including GST (based on one set of twins using a home sample collection kit. Contact us for the cost of testing other multiples, or to request a sample collection kit.)

See also other Relationship Testing


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