> For the complete documentation index, see [llms.txt](https://help.connected.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.connected.illumina.com/emedgene/emedgene-analyze-manual/reviewing_a_case/lab_tab/sample-quality-section/array-sample-quality-metrics/array-sex-validation.md).

# Array sex validation

The Sex validation column indicates whether the biological sex inferred from genomic data matches the sex information provided during case creation.\
This helps identify potential sample mix-ups or metadata errors before interpretation begins.

Sex validation results:

* Pass

  Reported sex matches the estimated sex
* Fail\
  A mismatch was detected between reported and estimated sex.
* N/A\
  QC file not available; validation could not be performed.

{% hint style="warning" %}
If the sex was marked as unknown during case creation, the system will display the predicted sex instead of a validation status.
{% endhint %}


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