The study examined records for patients with Type 2 diabetes who received either SGLT2 inhibitors or GLP-1 receptor agonists, in addition to other diabetes medications, from 2012-17
Endres et al., 2017), although both of these studies measured GSH using a short- TE STEAM acquisition rather than our more specific spectral editing approach
Their team is clear about limitations, including cost, insurance challenges, and the need for comprehensive treatment models that integrate therapy and long-term support

GHK-Cu half-life and blood clearance Plasma half-life: Approximately 30-60 minutes in circulation Varies by administration route Injectable: ~30-45 minutes Topical: Similar once absorbed (slower absorption though) Very short compared to some peptides What half-life means: Time for 50% of peptide to clear from blood After one half-life: 50% remains After two half-lives (1-2 hours): 25% remains After three half-lives (1.5-3 hours): 12.5% remains After four half-lives (2-4 hours): 6.25% remains Essentially cleared within 4-6 hours GHK-Cu clearance timeline: Why such short half-life: Small peptide (easily filtered by kidneys) Rapidly metabolized by enzymes Not designed for long circulation Acts quickly at cellular level then clears Learn peptide basics at SeekPeptides - explore what are peptides , how peptides work , and copper peptides GHK-Cu guide
doi:10.1054/ghir.2001.0239 Svensson J, Lall S, Dickson SL, et al
This leaves a lot of flexibility to find a rotation schedule that works for you