Gibco™ HT Supplement is a liquid mixture of sodium hypoxanthine (10 mM) and thymidine (1.6 mM). HT-supplemented medium is suitable for post-selection rescue to overcome the effects of residual intracellular aminopterin. Once the de novo biosynthesis pathway for nucleosides has been reestablished, HT supplementation can be discontinued.

cGMP Manufacturing and Quality System
Gibco™ HT Supplement is manufactured at a cGMP compliant facility, located in Grand Island, New York. The facility is registered with the FDA as a medical device manufacturer and is certified to ISO 13485 standards. For supply chain continuity, we offer a comparable Gibco™ HT Supplement product made in our Scotland facility (41065-012). This facility is registered with the FDA as a medical device manufacturer and is certified to the ISO 13485 standard.