"Will our children be healthy?"
It's the question behind almost every premarital genetic test. Here's how inherited conditions actually pass to children — and how a simple test before marriage changes what you can know.
- Understand inheritance in plain language
- Real-world numbers, not just theory
- Options if you find a shared risk
- Compassionate, no-pressure counseling
Most children born with inherited conditions have healthy parents.
It's a fact most people don't know. Recessive inherited conditions — the most common category of rare disease — pass from "carrier" parents. A carrier has one healthy copy of a gene and one altered copy, and usually shows no symptoms at all. A carrier lives a completely healthy life.
The issue only appears when two carriers of the same gene have children together. Suddenly, every pregnancy has a 25% chance that the child inherits both altered copies — and is affected. No warning, no family history required.
Premarital testing reveals this situation before it becomes a surprise.
Three common family patterns.
Both carriers, same gene
Each pregnancy: 25% affected, 50% carrier, 25% unaffected. The clearest scenario where testing changes decisions — options include IVF with PGT-M, prenatal diagnosis, or informed natural conception.
One carrier, one not
Children may be carriers themselves, but cannot be affected by that recessive condition. Testing gives you awareness for your children's future partners, not a current worry.
Both cleared for a gene
For that specific condition, your children are not at risk. Comprehensive testing gives this reassurance across thousands of genes at once.
Clarity, then choices.
Know what you carry
Whole exome sequencing identifies your carrier status across 4,000+ inherited conditions — not just the two the government screen covers.
Know your shared risk
The couple-level report tells you which risks apply to your future children — not just to each of you individually.
Discuss options with a specialist
45-minute bilingual counseling walks through your report and what each option would mean for your family. No pressure, no judgment.
Questions parents-to-be ask.
Can healthy parents have a child with a genetic disease?
Yes. Most inherited diseases are recessive — meaning healthy parents can be silent carriers. If both partners carry a variant in the same gene, every pregnancy has a 25% chance of producing an affected child, even with no family history.
How likely is it that our children will inherit a genetic condition?
For any given rare recessive condition, the risk depends on whether both partners are carriers. Compatibility testing quantifies this for thousands of genes at once. Related couples (cousin marriage) have a higher baseline chance of sharing rare variants.
If we have no family history, do we still need testing?
Yes — most inherited conditions come from healthy carrier parents with no family history. That's the whole point of premarital screening: it identifies risks that a family tree cannot reveal.
Can genetic testing guarantee a healthy baby?
No test can guarantee that. Whole exome sequencing covers the majority of known Mendelian conditions, but some disorders (large structural variants, some non-coding, some multifactorial) are not detectable by WES. Testing gives clarity about known risks — not a guarantee.
What are our options if we find a shared risk?
Options include informed natural conception (understanding the odds), preimplantation genetic testing (PGT-M) with IVF to select unaffected embryos, prenatal diagnosis during pregnancy, or gamete donation. Genetic counseling walks through each option without pressure.
When is the best time to test?
Before pregnancy — ideally 3–6 months before marriage or before conception. This gives you time for results, counseling, and decisions without time pressure.