Difference Between DNA Test and PGS Test
Farah 30sFemale
What is the difference between a DNA test and a PGS test?
14 Oct 2025
Replies
Answer from the Doctor
A DNA (carrier) test and a PGS (Preimplantation Genetic Screening) test serve different purposes in fertility care.
A DNA or carrier test is performed on you and your partner to identify if either of you carries genetic conditions that could be passed on to your child. This test provides lifelong information since your DNA does not change (unless exposed to extreme factors like radiation). It helps you understand your genetic background and risks before starting fertility treatments.
A PGS test, on the other hand, is performed on embryos during an IVF procedure. It screens each embryo for chromosomal abnormalities or inherited diseases before selecting the healthiest one for transfer. Because it involves testing each embryo, it is usually part of the IVF package and can be more costly.
Carrier testing doesn’t replace PGS rather, it complements it. Doing carrier testing first can help you make a more informed decision about whether PGS is necessary for your fertility journey.
A DNA or carrier test is performed on you and your partner to identify if either of you carries genetic conditions that could be passed on to your child. This test provides lifelong information since your DNA does not change (unless exposed to extreme factors like radiation). It helps you understand your genetic background and risks before starting fertility treatments.
A PGS test, on the other hand, is performed on embryos during an IVF procedure. It screens each embryo for chromosomal abnormalities or inherited diseases before selecting the healthiest one for transfer. Because it involves testing each embryo, it is usually part of the IVF package and can be more costly.
Carrier testing doesn’t replace PGS rather, it complements it. Doing carrier testing first can help you make a more informed decision about whether PGS is necessary for your fertility journey.
14 Oct 2025
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