For those who avoid tomatoes because of GERD, or can't eat nightshades
The superoxide anion is the first step in the process
Ensure they perform baseline testing (GH stimulation, IGF-1), demonstrate reconstitution techniques, and supervise dose titration
Calibration curves of Glu and GSH were made with standards, and the concentration of GSH was calculated by internal-standard method with 13 C 2 - 15 N-GSH as internal standard, while the concentration of Glu was calculated by external-standard method
Author contributions HL conceived the study
In addition to looking at metals specifically, Oxidative stress and Glutathione (via an Organic Acids test) testing can provide useful insight into how well the body may be dealing with exposures