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Tests include: Blood Tests for Growth Hormone Deficiency Binding protein level (IGF-I and IGFBP-3) blood tests to determine whether or not the problem is caused by the pituitary gland Blood tests to measure the amount of growth hormone levels in the blood Blood tests to measure other levels of hormones the pituitary gland produces GHRH (Sermorelin)-arginine provocative test Other GH provocative stimulation tests Insulin tolerance test Other Exams/Tests to Diagnose Age-unrelated Severe Growth Hormone Deficiency In addition to blood tests, a physician may perform some additional exams and tests to help diagnose growth hormone deficiency

(Source 7) One small study showed that drinking 5 cups of coffee per day increased glutathione levels by 16% compared to a control group

10.3233/JAD-2011-101995 132 Hernndez-OjedaJ.Cardona-MuozE

It is produced by adding cysteine to glutamate and then adding glycine