The user reconstituted 50 mg GHK-Cu with 3 ml bac water and noticed it became opaque after three days in the fridge, unlike a prior batch. Participants explain that GHK-Cu can precipitate due to concentration, pH, temperature swings, or rough mixing, and suggest more dilute reconstitution, gentle handling, and consistent refrigeration to avoid cloudiness. Some view mild opacity in the syringe as acceptable while others recommend discarding if the vial itself looks unclear or if unsure. The thread also covers venting during reconstitution and comparing photos for clarity.
What this discussion establishesWhether the current cloudy vial is still usable or should be discarded
Still openExact cause of this batch's opacity and whether it matches normal variation
Nothing here is advice.
I got the product and mixed 50 mg with 3 ml of bac water. After three days it looks opaque, unlike the last batch I had. Is this version still okay to use or has it gone bad?
Right after you mixed it, was the liquid clear at first and only turned cloudy once it went into the fridge?
It looked brighter at the start, and yes it got cloudy later.
This compound reacts to how concentrated it is, the pH level, and temperature changes. To stop cloudiness or settling, mix it weaker, swirl gently instead of shaking, and keep it cold without big temperature shifts. Fresh bac water, fewer punctures, and letting it reach room temp before drawing also help.
Is the vial itself clear or does it look cloudy too? I have seen cases where the syringe showed some haze even though the vial stayed clear, and that was still fine.
That is similar to handling a very delicate peptide where skipping a vent needle causes instant foaming from the vacuum pulling the liquid in too fast.
A photo of the vial would help since the syringe does not show things as clearly as glass does.
I would also like to see the photo.
Any thoughts on whether it is still safe or good to use?
Cloudiness aside, the spots would make me uneasy. Could be air bubbles, but I would probably discard it and clean the workspace and tools thoroughly.
Is there white material settled at the bottom of the vial?
The material inside the vial looks acceptable to me.
In general this compound does not like opacity, though extreme dilution would make almost anything look clear.
It may come down to how clear is defined. After uploading the images the analysis said both the syringe and vial appear clear.
I checked with another AI and it said to throw it out. I went ahead and ordered larger 5 ml syringes with a 30 g needle to avoid splashing during mixing.
Also use a vent needle, even a regular syringe needle works, to release the vacuum so the bac water does not rush in too quickly.
Why link versions without a needle? Are the needles on the one I picked not suitable?
I get both kinds, but the shorter needle may not reach the side of the vial well. A longer one would be better for that.
My own product should arrive tomorrow and I can take a comparison photo then.
You are using the standard bac water brand, right? Any test report available? This compound sometimes comes with more than the labeled amount.
Here is mine right after mixing. It is a blend, if that makes a difference. People mentioned stinging but I felt almost nothing at the dose I tried. Also the vial only held 3.5 ml instead of 4.
Yes that bac water. What is a coa? My previous batches never looked like this. How do you mix it exactly?
A COA is a test report that shows the actual amount and purity. It is short for certificate of analysis.
You could try filtering with a 0.22 micron syringe filter to see if it clears up.
How would I find that report? Do I need a batch number?
Most sources keep their own test results on file or will send them if asked. Group tests can also be found by searching batch numbers in certain channels.
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