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Participants displayed better social interaction and verbal skills, although scores tended to revert when treatment stopped

Adding less than 0.5 mL to any vial makes accurate dosing extremely difficult with standard syringes

The process of freezing and thawing can create ice crystals that damage the peptides structure, causing aggregation and reducing its bioactivity

Conclusions and future directions In conclusion, we report that anticoagulant, sample processing, and sample storage methods significantly affect levels of GSH within plasma samples and that these methodological differences impact post-processing summary reporting