ghk-cu present in human plasma What Is GHK-Cu? Discovery & Research Buy GLOW – GHK-CU (50mg)
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doi:10.1007/s00467-007-0604-1 59

Miller TR, et al

If your calculated units fall below 10, consider using a more dilute concentration to push the measurement into a more accurate range

However, high-level anti-doping tests for professional athletes (like those used by WADA) do test for BPC-157, as it is a banned substance in most competitive sports
