griffith wo 1980 determinaton of glutathione for Food and Health Applications with Emphasis on Extraction, Identification, and Quantification Methods: A Review Glutathione - PMC
Description
Assessment of the phylogenetic analysis and antimicrobial, antiviral, and anticancer activities of marine endophytic Streptomyces species of the soft coral Sarcophyton convolutum

There are some lab markers that may be helpful in addressing MCAS: DAO enzymes this is an enzyme that breaks down histamine, so checking for deficiencies can be helpful

Comparative efficacy and tolerability of antidepressants for major depressive disorder in children and adolescents: a network meta-analysis

The "L" designation refers to the specific molecular configuration, and this form is essentially the same as what people commonly refer to as "glutathione." Is it safe to take L-glutathione daily for long-term use

A total of 1,600 samples were analyzed
