> For the complete documentation index, see [llms.txt](https://help.bioinsight.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.bioinsight.illumina.com/emedgene/emedgene-analyze-manual/reviewing_a_case/lab_tab/sample-quality-section/ngs-sample-quality-metrics.md).
# NGS sample quality metrics
NGS sample quality metrics provide an overview of QC validation and coverage results for each sample.
{% hint style="info" %}
In v100.41 and later, validations that cannot run reliably are not performed.
* [**Contamination**](/emedgene/emedgene-analyze-manual/reviewing_a_case/lab_tab/sample-quality-section/ngs-sample-quality-metrics/contamination.md) and [**Ploidy**](/emedgene/emedgene-analyze-manual/reviewing_a_case/lab_tab/sample-quality-section/ngs-sample-quality-metrics/ploidy.md) show **N/A** for samples that contain fewer than 10000 variants.
* The [**Pedigree section**](/emedgene/emedgene-analyze-manual/reviewing_a_case/lab_tab/pedigree-section.md) is displayed only for family cases where the [joined VCF file](#user-content-fn-1)[^1] contains at least 10000 variants.
{% endhint %}
\**Available only for whole genome FASTQ cases.*
[^1]: A Variant Call Format file that merges the proband's variants with family members' variants.
---
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