> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/microarray/general/microarray-general-faq-list.md).

# FAQ

Microarray > General > FAQ

* [Can Infinium BeadChips that have been frozen still be used?](/microarray/general/microarray-general-faq-list/000005924.md)
* [Can Infinium reagents be freeze-thawed?](/microarray/general/microarray-general-faq-list/000006651.md)
* [Can Multiple BeadChip Types Be Scanned in the Same Carrier or iScan Run?](/microarray/general/microarray-general-faq-list/000009187.md)
* [Can a Tecan/IAPS mock run be completed while the instrument is connected to Illumina LIMS?](/microarray/general/microarray-general-faq-list/000009708.md)
* [Does DRAGEN Array have a Call Rate threshold to estimate gender?](/microarray/general/microarray-general-faq-list/000009191.md)
* [How does the iScan rescan feature work?](/microarray/general/microarray-general-faq-list/000009184.md)
* [How is the Reproducibility Frequency calculated in GenomeStudio?](/microarray/general/microarray-general-faq-list/000009677.md)
* [How long can bisulfite converted DNA be stored in -20°C for use in Infinium Methylation arrays?](/microarray/general/microarray-general-faq-list/000006515.md)
* [How to select GenTrain version in GenomeStudio 2.0](/microarray/general/microarray-general-faq-list/000009170.md)
* [Infinium Assay Modifications for FFPE Samples Used with Genotyping Arrays](/microarray/general/microarray-general-faq-list/000006007.md)
* [Infinium BeadChips Shelf Life and Expiration Timeline](/microarray/general/microarray-general-faq-list/000007091.md)
* [Is a sample sheet required to run DRAGEN Array?](/microarray/general/microarray-general-faq-list/000009345.md)
* [Is it possible to add or remove fields in DRAGEN Array Cloud Genotyping Final Report?](/microarray/general/microarray-general-faq-list/000009460.md)
* [Location of the iScan and Tecan Serial Number Stickers](/microarray/general/microarray-general-faq-list/000009652.md)
* [What Are the Required iScan Control Software Version and Scan Settings for Infinium EX BeadChips?](/microarray/general/microarray-general-faq-list/000008679.md)
* [What GTC files can be used with DRAGEN Array Local?](/microarray/general/microarray-general-faq-list/000008555.md)
* [What Is the Expected DNA Fragment Size Following the Fragment DNA Step of the Infinium Assay?](/microarray/general/microarray-general-faq-list/000005837.md)
* [What is the correct order of addition of Infinium Amplification reagents?](/microarray/general/microarray-general-faq-list/000005874.md)
* [What is the limit of detection for LOH/AOH for the CytoSNP-850K array?](/microarray/general/microarray-general-faq-list/000006024.md)
* [Which Fluorometric Quantification Method to Use for Quantifying Input DNA for the Infinium Assay?](/microarray/general/microarray-general-faq-list/000008332.md)
* [Which Infinium BeadChip types can be scanned using the NextSeq 550?](/microarray/general/microarray-general-faq-list/000003871.md)
* [Why do different BeadChip types with the same format (HD, HTS, or LCG) have different numbers of stripes scanned per sample?](/microarray/general/microarray-general-faq-list/000009190.md)


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