Cart You may be interested in… Your cart is currently empty! New in store Sale Product on sale 3-HK/KYNA ratio ELISA pack € 1.049€ 1.198 Add to cart / quote Sale Product on sale KMO Activity ELISA Pack (3-HK/KYN ratio) € 1.049€ 1.198 Add to cart / quote L-Tryptophan antibody – Rabbit Polyclonal € 449 Add to cart / quote 3-Hydroxykynurenine antibody – Rabbit Polyclonal € 449 Add to cart / quote