Get Help Sign In

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.

How do I order modified oligos online?

Modified oligos can be ordered from our Custom DNA or Custom RNA pages. Modifications can be added to the sequence from the modification tabs below the sequence entry box. Not all modifications are available for all synthesis scales. If you do not see the modification you are looking for, adjust the oligonucleotide synthesis scale.

Custom DNA & RNA


*RUO—For research use only. Not for use in diagnostic procedures. Unless otherwise agreed to in writing, IDT does not intend for these products to be used in clinical applications and does not warrant their fitness or suitability for any clinical diagnostic use. Purchaser is solely responsible for all decisions regarding the use of these products and any associated regulatory or legal obligations.