oxidized glutathione structure Glutathione, oxidized is the oxidised dimeric form of glutathione that takes part in the body′s detoxification mechanisms Glutathione - Wikipedia
Description
GSH content also varies among different areas of the same tissues

Laha BSB, Huberman AD

Studies have shown that the bioavailability of B12 is three times greater in dairy products than in fish, poultry, and meat

Translation: Better glutathione status means better energy, recovery, and physical performance

In cases where this is unavoidable, processing time (time between collection of whole blood and plasma deproteinization) should be included as a control variable in analyses
