# What is the correct format for DRAGEN Array IDAT CSV Sample Sheet?

The DRAGEN Array IDAT CSV sample sheet is file that contains only two columns of data:\
**beadChipName:** Beadchip barcode\
**sampleSectionName:** Beadchip position

Refer to following example:\
![](/files/FqAC1E4i7R9Z5iGkpvaZ)

When using DRAGEN Array (cloud or local), a sample sheet is optional.

**Note:** The DRAGEN Array CSV sample sheet format is different from the GenomeStudio CSV sample sheet format. The GenomeStudio sample sheet can contain additional columns of data and is intended for use with GenomeStudio software analysis only. However, the guidance for formatting the 12-digit beadchip barcodes applies to both DRAGEN Array and GenomeStudio CSV sample sheet.

**For additional information, see the following resources:**

* [Infinium Global Diversity Array with Enhanced PGx Product Files](https://support.illumina.com/array/array_kits/infinium-global-diversity-pgx/product-files.html)
* [DRAGEN Array Sample Sheet Templates](https://support.illumina.com/downloads/dragen-array-sample-sheet-templates.html)
* [Important information about using 12-digit BeadChip barcodes in GenomeStudio sample sheets](https://support.illumina.com/bulletins/2016/10/important-information-about-using-digit-beadchip-barcodes-in-genomestudio-sample-sheets.html)
* [How to format file path for DRAGEN Array IDAT sample sheet and GTC sample sheet for Windows OS](https://knowledge.illumina.com/microarray/general/microarray-general-faq-list/000008510)

\
\
\ <br>

|                                                                                                                                                                                                                                                                                                                                                                   |
| :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
| *For any feedback or questions regarding this article (Illumina Knowledge Article #6290), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000006290%20-%20Microarray%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://knowledge.illumina.com/microarray/general/microarray-general-troubleshooting-list/000006290.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.