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Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

What is the length of synthetic, custom genes that IDT can synthesize?

We can synthesize custom genes from 25 bp to more than 5 kb in length. Sequences longer than 5 kb will need to be reviewed by our lab members before accepting them for synthesis.

If you would like to submit a sequence for review or obtain an official quote, email your sequence to Synthetic Biology Support at