Cloudy reta

[px1984]

ALVJAY said:

The whole 'Hospira or nothing' debate is exhausting. Outside the US, finding real Hospira is basically a lost cause. Meanwhile, everyone else is doing just fine with the so-called 'fake' bac water...

When Vgpep has stock, orders go out the following day. I placed one this morning. They also deliver throughout the EU.

On top of that, if it looks cloudy, throw it away.

 

[joseblo]

CNCCurrency said:

joseblo said:

vale113 said:

faloppi said:

My guess would lean toward a pH mismatch between that particular vial and your bac water. For most reconstitutions the bac pH works fine, but in this case the two may be sitting nearer the iso point. I once had bac water that tested a touch alkaline; it mixed clear with my tirz, yet my CJC went cloudy, since tirz tolerates a wider range and carries a different charge. If you happen to have inexpensive pH strips around, a quick check on that vial could tell you something. Adding more bac to dilute further might also give the peptide extra room to go into solution even when cold, though that seems odd given you likely use the same bac volume per vial. Of course, you would need to recalculate your unit count to hold the dose steady.

That possibility crossed my mind as well, because I'm adding a smaller amount of water—though this isn't my first time working with 1 ml.

That's the right approach, particularly when you don't know the pH of your BAC and when other people may be seeing cloudiness too. For reconstitution, I usually stop at 20mg/ml.

What's happening with this vial: every time it turns cloudy, peptide molecules aggregate (they clump together). Once you warm it back up, a portion of those clumps won't go back into solution completely. Since those aggregates have little biological activity, the dose you actually get is reduced, and they are also the kind of thing that may trigger immune reactions. The pharma industry takes this seriously, and for Trizepatide specifically EL sets a limit of no more than 30mg. Reta is more sensitive and harder to dissolve so I'd go lower.

Also, wouldn't really trust AI for this kinda stuff, you'll get gibberish.

Cerca di stare al fresco!

Keep it cool if you can! So basically, you're telling me he's screwed?

Hang in there, man! Right now it's scorching across most of Europe.

 

[vale113]

I figure the cause is that I mixed 20 mg with just 1 ml; when it's in the cold fridge it turns like that, yet the moment I pull it out, it becomes completely clear. I'm unsure if I should go ahead and use it.

 

[ultima thule]

My very first Reta vial did the same thing. Once it came out of the fridge it looked cloudy, then as it warmed up to room temperature it turned completely crystal clear. I'm fairly confident the cause was that I didn't vent the vial correctly during reconstitution. Since that was my first time ever reconstituting a peptide, I skipped the venting step entirely. A different vial from the same kit, mixed with the same bac water, had no problem at all—but that one was vented the right way. Either way, the "cloudy" vial performed just fine, so I wouldn't stress over it.