RT15侦察机与医院交汇处一片浑浊，到处漂浮着颗粒物。求助！

[Calm Logic]

Makes you wonder about the vials that look fine:

This is why two people can take the "same" dose from different batches and have completely different results. Batch A (Acetate salt) works perfectly, while Batch B (high TFA) feels like it’s only 50% as strong.

Since you've seen a vial actually "crash," it’s highly likely that the lab in question has very low standards for salt exchange. It makes you wonder how many of their "clear" vials are still sitting at a 5% or 8% concentration—just below the threshold of visible precipitation.

Feature High-Quality (Acetate) 5% TFA (Dirty) Impact Receptor Binding 100% 60% – 80% Reduced weight loss / metabolic signal. Bioavailability High Medium / Low Less of the dose actually reaches the blood. Half-Life ~6-7 Days ~3-5 Days "Crash" occurs before the next dose. Tissue Health Neutral Inflamed Poor absorption due to localized swelling.

So bad news for grey reta in general:

TFA (Trifluoroacetic acid) salts are significantly more likely to be an issue in "grey market" Retatrutide compared to Tirzepatide.

Factor Tirzepatide Retatrutide Synthesis Maturity High (Refined over years) Lower (Newer, more "rushed") Molecule Complexity Dual Agonist Triple Agonist (Harder) TFA Risk Moderate Very High Visual Warning Stays clear longer "Snows" or Flakes quickly

Substance Type TFA Risk Primary Reason Semaglutide Peptide Lowest Mature synthesis; very stable structure. Tirzepatide Peptide Moderate Standardized; usually stays clear even if acidic. Maz / Survo Peptide High New to market; complex GCG-targeting structures. Retatrutide Peptide Extreme Triple-agonist; highly sensitive to pH and ion shifts. Orforglipron Small Molecule N/A Non-peptide; TFA is not used in its chemical synthesis.

 

[Airborne Daddy]

Makes you wonder about the vials that look fine:

So bad news for grey reta in general:

I like tirz lately... banged 15 in the delt(insulin pin so there wasnt muscle penetration, maybe a tad.... but was disgusted by my favorite foods for 5 days...may just pin 2mg sema/15 tirz and 12 reta.... see how long it takes for acute pancreatitis...

 

[Calm Logic]

Does anyone know what a 3P test would show for purity with TFA salt issues (even if not enough to crash a vial)?

From what people are saying on TG, TFA would not affect the purity percentage at all , which is another reason TFA is a separately ordered test.

This is reassuring, from someone at a testing group:

I have seen many TFA Tests and have never seen a non-passing result. The individual that runs Jano said he has seen it but it is rare. Not a bad idea to check a vendor once in a while buy not necessary every test group.

But Jano used to say the same thing about endos and sterility.

 

[GLP1Pharmacist]

Bacteriostatic water or NaCl-Saline by Hospira?

 

[Mr.Tired]

Worth noting they have a coa on this which would have given me a lot of confidence in the product before this latest round of issues. This may be another lesson in over reliance on vendor coas.

Janoshik Analytical

 

[BNLFL]

Here we go with another issue. Glad i have 6 years worth with only 20% contaminated with endos...

I have 4.5 of Reta, all clean. Added another 600MG, and might do another 600 in a few. 600mg is good for 11 months at the current weekly use rate. You're winning...

 

[BillC]

Here we go with another issue. Glad i have 6 years worth with only 20% contaminated with endos...

I found a great time to start experimenting with peptides it looks..

 

[Minkster]

Yep, I've seen the cloudy R10, R15 across several vendors.

 

[Calm Logic]

Yep, I've seen the cloudy R10, R15 across several vendors.

Yeah, I was nervous today when I saw multiple vendors were affected. Just yesterday, I received black-top R10 in the mail from a GB. Reconned it after seeing this thread and it was fine, diluted completely. (Original vendor was EGMN, which seems to have their own website but is practically unknown. So they probably mostly do bulk sales.)

 

[CNCCurrency]

B

B

A

R

N

那岂不是比阴天更严重，是那种结块的阴天？

 

[byefatlicia]

那岂不是比阴天更严重，是那种结块的阴天？

还有机会吃到肉丸吗？

 

[sheilarae74]

我的货源卖的是同一款黑色R15，他们的那款有问题，但幸运的是我买到的R20，我的这台翻新得非常干净，目前为止安装都没问题。

 

[sfkid]

我有一台Barn牌的R30空调。大概三个月前买的，但几天前才翻新，现在看起来有点浑浊……

 

[Chili777]

针对TFA问题的供应商“解决方案”是用PBS（磷酸盐缓冲液）降低pH值。PBS常用于生物研究中以维持稳定的pH值。之前这里有过关于这个问题的深入讨论：

Reta浑浊（我的BAC浓度很高） [archived internal link]

另一个建议是使用AA，但这会造成酸性环境，我认为这可能会加速Reta的降解。我不确定 @ambot88的 补救措施最终结果如何，但供应商确实同意更换试剂盒。如果是我，我也会这么做。

 

[Minkster]

我有一台Barn牌的R30空调。大概三个月前买的，但几天前才翻新，现在看起来有点浑浊……

我用的是一月份买的Barn R30，屏幕很干净。感觉好随机啊。

 

[Mr.Tired]

这里对此进行了深入讨论：

[archived internal link]

这个帖子不错，谢谢分享链接。

有很多精彩的评论，但我认为这一条尤其值得强调。

如果你没耐心看完整个帖子，可以直接跳到我加粗的最后一段。

Commenting because I saw other people mentioning this problem too.

Some science behind it. Maybe interesting for others who have had this happen or if it ever happens in the future. The cloudiness is likely a pH problem. The peptide likely has residual TFA salts from manufacturing that should not be there, and when BAC water is added the combined acidity lands right on retatrutide's isoelectric point. The molecules lose their charge, clump together, and crash out of solution. That's the cloud.

The simplest thing to rule out is the BAC water itself. Hospira's own spec allows pH from 4.5 to 7.0, which is a huge range. A bottle sitting at the low end will crash TFA laden peptide while a bottle at the high end might reconstitute it perfectly clear.

Trying BAC water from a different supplier or at least a different production lot is the most practical first step before reaching for any other options. With pH strips it is possible to compare different BAC bottles and see if it explains the cloudiness.

Also worth noting that Hospira is one of the most counterfeited medical products out there. If it's fake and actually contains sodium chloride, that causes a whole different precipitation problem, and switching supplier would immediately reveal that.

And filtering a cloudy solution removes the peptide itself, not some contaminant. That cloud IS the retatrutide. A significant portion of the dose can be lost with no way of knowing how much. Filtering only makes sense after the solution has already been cleared through a pH correction, to remove the small fraction of irreversible aggregates.

The PBS rescue not staying clear is because aggregate seeds formed while the peptide sat at the wrong pH. Those seeds act as templates that slowly pull dissolved peptide back out of solution. Adding more PBS won't fix that because it's a structural problem not a pH problem at that point.

Acetic acid can make it look clear but the initial clumping that was visible was further aggregation before redissolving. Some peptide was likely damaged irreversibly, and the solution is now in a more acidic environment that degrades it faster over time.

[...]

Would I use cloudy solution? No.

Aggregated peptide can train the immune system to recognize that peptide as a threat. Once antibodies develop against it, they can neutralize not just the aggregated form but also properly dissolved peptide in future injections. Pinning cloudy product can in theory make clean product less effective later .

 

[WLBLD]

I have their R10 white cap from Feb & mine is clear. Same with their T30 Orange cap (flat, no ridge/lip). Hope they make it right for you!!

 

[Chili777]

That's a good thread, thanks for the link.

Many good comments but I thought this one was worth emphasizing.

For those who don't have patience for the whole thing, skip to the last paragraph which I bolded

Yeah, I'm not completely sure about that because the PBS is supposed to eliminate the aggregation. It really doesn't matter anyway because a replacement is the right course of action.

 

[ambot88]

The vendor "solution" to this TFA issue has been to lower the pH with PBS, or Phosphate Buffered Saline. It's used in biological research to maintain a constant pH level. There was an extensive discussion of that here:

cloudy reta (I have good BAC) [archived internal link]

The other suggestion was AA, but that creates an acidic environment, which I think could potentially degrade the Reta faster. I'm not sure how @ambot88 made out with their rescue attempt, but the vendor did agree to replace the kit. That's what I would do.

The pbs rescue did work as far as I can tell - a 30%pbs to bac ratio reconned clear and I've been using it and haven't died. The vendor did replace my order but I'm still just using all of it. I did also try the AA and it created a ton of particulates and looked much worse but then cleared up after awhile - that made me nervous and I didn't pin that one.

 

[LabRatBarbie]

Egmn? Can you share?