is there a blood test for glutathione Index normal glutathione levels in blood

Journal of Dermatological Treatment 23: 97-102 (2012) Birben E, Sahiner UM, Sackesen C, Erzurum S, Kalayci O

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The elevation of histamine is also an indicator of decreased methylation function as it is inactivated by histamine-methyl transferase

Development and initial validation of the hangover symptoms scale: prevalence and correlates of hangover symptoms in college students

Searle T, Al-Niaimi F, Ali FR

It could therefore have been expected that we would see changes in these metabolite levels over time within our control group (and potentially in the migraine groups)