Question 1

What is the catalog number for Interleukin-21?

Accepted Answer

The catalog number for Interleukin-21 is AP85054.

Question 2

Is Interleukin-21 in stock?

Accepted Answer

Interleukin-21 is currently made to order / not held in immediate stock. Contact us for lead time.

Question 3

What expression system was used for this recombinant protein?

Accepted Answer

The expression system, such as E. coli, HEK293, or insect cells, is listed on the datasheet under production details, which can affect post-translational modifications relevant to your application.

Question 4

Can I return this product if I ordered the wrong one?

Accepted Answer

As a consumer, you have a 14-day right of withdrawal from receipt under EU consumer protection law, submitted via our withdrawal/cancellation request form. Note this applies to unused, undamaged products, and doesn’t override the expiry/storage conditions on performance-based claims.

Question 5

Is this product tested for endotoxin levels?

Accepted Answer

Endotoxin testing status is noted on the datasheet where applicable, particularly for recombinant proteins intended for cell-based or functional assays. If this isn’t listed and you need confirmation, contact support with the catalogue number.

Interleukin-21

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