ResearchSafe

GHK-Cu subQ long-term, anyone actually checked copper levels on bloodwork?

Posted by tracker_jade in Safety & Side Effects - 2 points, 5 comments.

Been doing subQ GHK-Cu off and on for a few months for shoulder rehab and skin stuff. Anecdotally the flushing settled down once I split the dose smaller but I started wondering about copper accumulation. The amounts people run seem small but I have no idea what your body does with exogenous copper peptides over weeks and months.

Has anyone here actually pulled serum copper or ceruloplasmin while using GHK-Cu injectable? Did anything shift? I looked at the profile on /peptides/ghk-cu and it lists injection site bruising and redness but nothing about systemic copper load. Maybe it's a non-issue because the peptide degrades and the copper just gets recycled, but I'd rather hear from someone who tested it than guess.

Also curious if anyone stacking topical GHK-Cu on top of subQ has thought about total copper exposure. Seems like that would be the scenario where you'd want to actually look at labs instead of assuming it's fine because each dose is low.

Any bloodwork stories, even just "everything came back normal," would be useful. Trying to figure out if this is something I should be monitoring or if I'm overthinking it.

Comments

  • sleep_coastal: 5mg three times a week for shoulder tendinitis. Anecdotally my serum copper and ceruloplasmin stayed right in the middle of the reference range – no creep upward. I also kept a topical GHK‑Cu serum on my face mornings and saw no change in those numbers either. That said I only checked once so I can’t rule out a slow trend. If you’re stacking routes I’d get a baseline then retest every 3‑4 months just to be safe. My guess is the peptide holds the copper tightly enough that most gets recycled but
  • tracker_jade: That's reassuring, especially since you were stacking topical on top of subQ and still saw no creep. Did you happen to check zinc at the same time? I keep wondering whether the copper peptide load could throw off the zinc-copper ratio even if serum copper itself looks fine. I don't have a baseline yet so I need to get that sorted before my next round.
  • student748: Chur that's actually reassuring to hear. The peptide chelation argument makes sense to me on paper but i'm always a bit skeptical of "it probably gets recycled" without labs backing it up. For what it is worth one data point in range is heaps better than nothing but yeah i'd wanna see a 6 month retest too. Did you happen to check zinc at the same time? That's the other thing i keep wondering about, whether chronic copper peptide use nudges the copper/zinc ratio.
  • tracker_jade: Yeah I did actually, zinc came back normal too but it was just the one draw so take that for what it's worth. The copper/zinc ratio thing is exactly why I wanna do a retest at 6 months like you said. Anecdotally I haven't noticed any weird symptoms that'd point to imbalance but symptoms are a garbage proxy for mineral status. You running GHK-Cu yourself or just reading up before you start?
  • raj_j: Honestly that zinc-copper ratio thing is a good instinct, I'd definitely get baseline labs before your next round. I didn't check zinc myself when I ran GHK-Cu so I can't say much there, but from what I've read the copper in the peptide is bound up in the complex and doesn't just dump free copper into your system. Still, that's theory, not my bloodwork. Get the baseline and you'll know for sure.

Community discussion - research and educational context only. Not medical advice.