You book a time that suits you, and a trained phlebotomist visits your home or office to collect a small blood sample
The peptide is endogenously present in human plasma at low nanomolar concentrations in young adults, with the concentration declining with age (a finding from the original GHK research literature that is frequently cited in discussions of the compound)
doi:10.1111/and.12521
For infectious outcomes, treatment with HTS was shown to reduce exacerbations overall for people with CF, but it did not alter bacterial burden for S
Then, in 2015, Lee and colleagues identified a previously overlooked open reading frame within the 12S ribosomal RNA gene of mtDNA and found that it encodes a functional peptide, MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) [1]
In September 2023, the FDA listed BPC-157 as a Category 2 bulk drug substance