Peptide Critic Community

@emkay lol I'm very new to the space and don't know what STG stands for or the website address.

@emkay how can I get a link to the STG TG?

@Stevepep said:

Endotoxins is a massive outlier.

Has anyone in the community seen any failed batches for the endotoxins test? specially with Nexaph

To the folks here not doing additional tests for your Nexaph orders, do you guys think the risk of endotoxins is pretty minimal then? I'm on the fence.

The batch I want is NXP-2P1004162026-03 and it's been around since April, so I assume if there was anything bad about it, it would have surfaced by now, but then again, not many people use the small mg kits [over-thinking intensifies ]

@WesEqualshXc I just joined the TG groups, but unfortunately, there are no third-party test groups for the lower GLP-2 doses (i.e 10mg)

So, I'm kind of left having to decide whether I want to shell out $500 for my own lab test or use the or just use the Nexaph kit without additional testing.

I looked into other vendors listed here, but they either use a sketchy lab for testing like "kovera labs" or they only do the bare minimum mass/purity testing but charge 5X Nexaph.

Crush looks good with their extensive testing, but they seem to be out of stock right now.

I'm also new, and considering ordering from them. I'm curious if you had Endotoxin or heavy metal testing done on samples from the kit that you received?

I'm not sure how big of a concern that is. The batch I have has a third-party mass+purity test, but not these two other tests.

My rat is currently off the lowest dose of prescribeable Tirz (2.5mg) and I've noticed the sleep quality is so much better without it and I don't feel lazy about working out anymore. I think my rat is a hyper-responded to this peptide.

Sleeping actually feels restful and refreshing. My rat has cycled off and on it a few times, so it's not a new phenomenon.

Now that I'm starting my rat on self-reconstituted Tirz, I can select the exact dose.

I'm curious if anyone has come across common doses below the 2.5mg that pharma suggests.

Sure, any dose below that could theoretically work, but I'm not sure what the pharmacokinetics of this compound is like. I don't want to go too low and not have it have an impact, but I also don't want to wreck my sleep and energy levels again.

The goal is mild/steady weight loss and appetite/craving control without the loss of energy.

I'm new to researching peptides and have been trying to figure out where to buy from, so I've been looking at the vendors directory and the reviews here.

I noticed that the majority (not all) of the reviews are made by relatively new accounts that join, leave that one review, and then never engage in the community and disappear - they seem to never log in again after leaving the review.

Are these just reviews by the vendors themselves, or what's going on here?

TBH, it has eroded my trust in the reviews significantly seeing this pattern.

I've never seen this kind of engagement pattern elsewhere, so I'm bringing it up - maybe because I have trust issues on the internet.

I'm over paying $300/mo for my rat's Tirz prescription, so I'd like to start reconstituting my own Tirz instead.

Is there a newbie friendly "starter" kit that you guys recommend that includes all the equipment I'd need - i.e syringes, filters, etc? I'll buy the Bac water and Tirz compound separately.

I've been watching a bunch of youtube videos on how to reconstitute peptide solutions - (how I found Peptide Critic). But I'm a bit overwhelmed by all the information on the equipment side of things.

A equipment list for dummies will also do in lieu of a pre-built equipment kit, specially if there's a big markup.

@Commander

So, as long as they have COAs with pictures of labeled vials with the correct batch number (and it matches the batch number you received), then you're good to go without additional testing?

For example, I've been looking at buying from Glacier and they seem to be doing this already.

https://glacieraminos.shop/wp-content/uploads/2026/05/GLA-3_RT_RET10GA-07_COA.pdf

@commander Just so I make sure I understood, you send out a sample vial for every from each peptide and time you buy a batch?

Do you buy from the "gray market sellers" or one of the vendors listed on the vendors directory on this site?

@Stan-Douglas said:

I don't know what answer you're looking for.

Mainly what's everyone else doing with these vendors. Are you guys sending a vial from each compound from every batch you buy to be tested?

Bumping this

Basically just what the title says.

I'm looking at Glacier Aminos and Southern Aminos who seem to be doing extensive testing for each of their batches.

But do I need to be extra paranoid and get my own testing done on top of what they already do?

What do people in this community tend to do?

I'm brand new to the peptide research community.

ps.

I'm sorry if this newbie question has been asked many times before, but I searched and couldn't find any questions that are quite the same.

Dosing higher will result in major complications that may not be reversible.

What do you mean by this? I've never heard of irreversible complications due to reta