How Accurate Is a Paternity Test?

What accuracy really depends on: correct participants, good samples, and disciplined collection.

By KINORA GENETICS·Published October 4, 2026·1 min read

Close-up rendering of a DNA double helix

Where accuracy comes from

Modern parentage testing compares a large set of genetic markers, so the analytical power of the comparison is very high when the right people are tested and the samples are good. The practical risks are almost always procedural rather than analytical.

What can undermine a result

The wrong person being sampled
Poorly collected or contaminated swabs
Degraded non-standard samples
Missing participants where a case needs more comparisons

How the process protects the result

Identity checks at collection, sealed sample handling, chain-of-custody records for official cases, and analysis by accredited laboratory partners.

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#DNA testing accuracy#paternity test accuracy#quality