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Register LoginThis is a vendor review submitted by matts on PeptideCritic.com.
Rating: 
(5/5)
We’ve used Nexaph for quite a while. Great pricing and quick shipping. Quality tested products…
Read the full review: Well done
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This is a vendor review submitted by Rum on PeptideCritic.com.
Rating: (5/5)
I’ve been extremely impressed with Certified Peptides so far. Ordering was simple, pricing was very competitive (esp w/the recent discount codes), shipping was fast, and everything arrived professionally packaged and exactly as expected.
What really stood out to me was the communication and transparency. Tracking updates were excellent, product information was easy to find, and having third-party testing/COAs available gives me a lot more confidence in what I’m purchasing.
I’ve ordered from other companies in this space, and Certified Peptides has quickly become one of my favorites. They're a U.S. based operation in Texas, and they ship domestically within the U.S. 
They offer a solid selection, great service, strong value, and a very smooth overall experience. I’ll definitely be ordering again.
Read the full review: Zero issues-fast, reliable & solid product
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I wanted to know if there is a real difference between various V2 peptide pins In terms of build quality. I mainly buy them here but I have purchased a few other on the open market mainly as an experiment. But I had a pen cartridge holder fail on me today. The plastic housing came away from the silver ring that attaches to the pen plunger part. I think the housing on my Gansolin pen may be metal but I am wondering if there are any peptide pen brands that use a glass cartridge holder, instead of the plastic.
I'm quite confused, I know there have been conversations about this lab not being reliable for various reasons and now I've seen some comments where @randy is semi-reluctantly suggesting they might be as reliable as Vanguard, Trustpointe, AFI, etc.
There's a lot of vendors using them and I know things can change so quickly, but what's the score on them today?
I’ve placed multiple orders with this company since January, and they’ve earned my trust every time. My latest order(much needed kit of TB) was placed on July 25th and delivered by July 27th during their Birthday sale. The customer service is consistently fantastic, and the products work as expected, no issues to speak of in my experience. A dependable company in my opinion.
This is a vendor review submitted by John on PeptideCritic.com.
Rating: (5/5)
The product was as described, and shipping was fast. Had zero issues, and the product was very high quality.
Read the full review: Product as described, fast shipping
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This is a vendor review submitted by researchpeptides99 on PeptideCritic.com.
Rating: (5/5)
Peptidology is just excellent in their quality control, product testing (consistently use same ISO certified lab and full testing), and customer service.
Been using them for a while now. They are slightly pricier but I don't mind paying for quality, mature ops, and great customer service.
Read the full review: Excellent products, testing, and customer service
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This is a vendor review submitted by researchpeptides99 on PeptideCritic.com.
Rating: (5/5)
Peptidology is just excellent in their quality control, product testing (consistently use same ISO certified lab and full testing), and customer service.
Been using them for a while now. They are slightly pricier but I don't mind paying for quality, mature ops, and great customer service.
Read the full review: Excellent products, testing, and customer service
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This is a vendor review submitted by Marineboy70 on PeptideCritic.com.
Rating: (5/5)
Had a great experience overall and look forward to purchasing again.
Read the full review: Great quality. Attentive customer service. Fast Shipping.
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This is a vendor review submitted by The masked Pepper on PeptideCritic.com.
Rating: (5/5)
Pricing is as close to gray as you're going to get without actually going gray so if you're trying to avoid having your address in a database after a customs seizure and want the security of using a credit card, they're your best bet. They test with Jano and if you're in their TG you can volunteer a vial and they'll pay to test up to 3 customer's vials for mass and purity. On top of that there are traditional 3rd party group testings you can join. In addition to that, they wholesale to other resellers so you might already be using their product and don't even know it. They always have 5% off for crypto and occasionally run sales. Two that they just did was 15% off everything which stacks with the crypto discount and 25% off everything if using crypto. Finally, they do have presales on Reta 24/48 and Tirz 30/60. The last one was 33% off the regular price. While I do buy gray also, if I just need to buy a single kit and need it fast, they are my go to. They overfill and the additional cost is worth due to the testing.
Read the full review: My Go To
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This is a vendor review submitted by Ed C on PeptideCritic.com.
Rating: (5/5)
Reta at orbitrex is by far the best, the research has been proving to be successful. Customer service is great and shipping is fast.
Read the full review: Best company
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This is a vendor review submitted by georgef on PeptideCritic.com.
Rating: (5/5)
Awesome customer service and response time. Possibly the most complete verifiable COA'S in the peptide market. Quick shipping.
Read the full review: Awesome company. None better.
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This is a vendor review submitted by georgef on PeptideCritic.com.
Rating: (5/5)
Nothing but great experiences. Definitely in the top 3 for transparent testing. Possibly the best verified COAS. Shipping isnt the fastest but very reasonable.
Read the full review: Fantastic
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This is a vendor review submitted by uxu on PeptideCritic.com.
Rating: (5/5)
Placed this order on Saturday, August 1, 2026. It shipped within 48 hours via FedEx 2Day, which is faster turnaround than I expected for a weekend order.
Ordering and checkout were straightforward. Pricing stacked cleanly: a 10% sale price on the 3-vial pack, a 10% discount code, and an additional discount for paying by bank transfer. Final total came to ~$150 including $12.00 shipping, down from a $180.00 list price. The confirmation email itemized every line, so there were no surprises between checkout and the receipt.
Packaging was better than average. The FedEx 2Day envelope contained a black bubble mailer as an inner protective layer, and inside that the KLOW vials came in a branded box with a molded 3-vial holder. All three vials arrived intact with no shifting in transit.
Product matched the published COA. In use it performed as expected for its stated purpose.
Read the full review: Fast turnaround, accurate COA, no surprises at checkout - great product
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Wow new research material.
https://www.xcelpeptides.com/product/eloralintide/
@randy Would it be available from any of the vetted vendors on the site?
This is the official discussion thread for a vendor on PeptideCritic.com.
View the vendor profile: Elite Edge Biotech
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What is the difference between these two vendors - Nexaph and EZ?
I'm sure I have gotten this wrong...
I thought EZ was a subbrand of Nexaph (or vice versa), with EZ being for single vial purchase and Nexaph being kits and wholesale.
But when I look on their order pages it appears that they both sell kits of 10, and it is actually NEXAPH that has the cheaper price on the 3P kit of 10.
Can someone please explain to me what the difference is between these two vendors, and pros and cons?
Thanks!
I'm surprised to find several EZ product pages with broken COA links, although the COAs are there under "Previous certificates".
I messaged them about two but also found a couple more just now having the same issue.
Their site and product pages used to be quite well maintained a few months ago.
What's going on?
This is a vendor review submitted by Marineboy70 on PeptideCritic.com.
Rating: (2/5)
I have purchased peptides from 3 different companies now and had a great buying and customer service experience with all 3.
This company is no exception. For that, they get 2 stars.
However, after purchasing GLP# as well as CJC1295+Ipamorelin (noDACS) from other companies with great results the first time, I knew what to expect from a good product.
I came across a deal via Peptide Critic for the (supposedly) same item at GenPeptides, so I purchased these items again through this company, as a 'bundle'. Great deal - if it works as advertised.
Before purchasing, I submitted the lab report for verification and it came back positive. However, after running it through AI, it pointed out that there were some pretty important gaps in the lab results compared to all other competitors I had previously used. After I inquired with the company, their response was: "Batch-specific sterility and endotoxin testing were not performed, so we cannot provide results or make batch-specific sterility or endotoxin claims. Additionally, we do not perform heavy metal testing."
This was a little concerning to me but I went ahead with the purchase.
I began using the product a day or so after receiving, reconstituting identically to my previous items, and I can report that after 3-weeks, the effects just aren't there. Even increased doses see zero response.
Maybe it works for others, but I'm not having any luck with products from this company.
Read the full review: Ineffective
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