Our laboratory technicians and chemists have developed a patent-pending, proprietary methodology to test the purity and safety of L-Tryptophan. Historically, L-Tryptophan has posed severe health risks due to the outbreak of Eosinophilia-Myalgia Syndrome (EMS) from several tainted batches in the 1990s. Accordingly, our methodology incorporates FDA, CDC and Mayo Clinic suggestions to isolate peak "X", which was most predictive of tainted L-Tryptophan lots.

Ingredient Name: L-Tryptophan
Test Description: HPLC analysis for purity and safety including peak "X" for EMS potential.

*There is a $50.00 sample fee for all analytical testing. Prices are subject to change without notice. For additional information regarding our laboratory analysis service, please contact a customer service representative toll free at 1-866-645-5227.