Computed from all 1,272 archived reviews — not written by us.
96% of the 1,272 customers who left a review rated their experience 4 or 5 stars. The subjects they raise most often are shipping speed, ordering experience and product quality. Product quality is the most consistently praised (4.92 average across 336 reviews mentioning it). Ordering experience draws the most mixed feedback, at 4.71. The 27 reviews rated 1 or 2 stars are kept in this archive and can be read using the rating filter.
#1 of 16 best companies in Research and Product Development
#2 of 29 best companies in Biochemical Supplier
#2 of 13 best companies in Biochemistry Lab
#2 of 26 best companies in Biotechnology Company
#4 of 11 best companies in Laboratory
#1 of 2 best companies in Pharmaceutical Lab
Written by the company
Prime Lab Peptides is a research-use-only peptide supplier known for consistent product quality and responsive customer support. We're a team of passionate individuals driven by the mission to provide the highest possible quality on the market — not by profit, but by purpose.
FREE & Fast U.S. Shipping
Orders ship within 12 hours – always free.
We process all orders within 12 hours of confirmation. Every package is shipped directly from our U.S. laboratory via FedEx 2Day Air, with full tracking and protective packaging to ensure fast and secure delivery.
Not gonna lie, I didnt get it at first. I saw “Research Use Only” and “Not for human consumption” and I was like… wait, I want tirzepatide for humans 😅 Took me a second to realize how it works. Anyway, glad I did’t skip it, quality is insane and like 40x cheaper than pharma brands. No regrets (of course I am a researcher)
Reviewed
JM
Jonathan Mowbray
US ·1 review
I’ve ordered from Prime Lab multiple times now, and every experience has been consistently top-notch. The products are clearly high quality, always arriving properly packaged and labeled. Shipping is lightning-fast, and customer support actually feels human—quick replies and clear answers every time. Easily the most professional peptide supplier I’ve dealt with.
Reviewed
BR
Brad
US ·1 review
A great experience so far!
Reviewed
JM
Jonnie Melson
US ·1 review
The quality is insane, the best I’ve tried so far.
Reviewed
MW
Mary Wentworth
US ·1 review
It’s a weird feeling, part of me wants to keep Prime Lab Peptides a secret, like I just discovered a hidden goldmine… but the other part wants to shout it from the rooftops 🤣🤣 This is hands down the best peptide lab Ive dealt with a nd of course I’m leaving a review, when you’re satisfied like this, you have to 😌
Reviewed
AG
Andrew Gilyard
US ·1 review
Not gonna lie, I didnt get it at first. I saw “Research Use Only” and “Not for human consumption” and I was like… wait, I want tirzepatide for humans 😅 Took me a second to realize how it works. Anyway, glad I did’t skip it, quality is insane and like 40x cheaper than pharma brands. No regrets (of course I am a researcher)
Reviewed
LL
Laura Lalli
US ·1 review
Everything went smooth, fast shipping, top quality. Nothing to complain about.Haven’t tested the product yet, but I have zero doubt about the quality !
Reviewed
PB
Paul Bivens
US ·1 review
Not gonna lie, I didnt get it at first. I saw “Research Use Only” and “Not for human consumption” and I was like… wait, I want tirzepatide for humans 😅 Took me a second to realize how it works. Anyway, glad I did’t skip it, quality is insane and like 40x cheaper than pharma brands. No regrets (of course I am a researcher)
Reviewed
JE
Joseph Eichner
US ·1 review
It’s a weird feeling, part of me wants to keep Prime Lab Peptides a secret, like I just discovered a hidden goldmine… but the other part wants to shout it from the rooftops 🤣🤣 This is hands down the best peptide lab Ive dealt with a nd of course I’m leaving a review, when you’re satisfied like this, you have to 😌
Reviewed
KM
Kathy Martinez
US ·1 review
I had my doubts at first, like most people ordering peptides online. But Prime Lab changed that. Everything, from the site to the packagin feels professional. And if you’ve already placed your order and you’re wondering if you made the right choice: you did 🤘🏻
Reviewed
PE
Paula Edgar
US ·1 review
Now I get why Prime Lab is all over socials. Quality speaks for itself. (retatrutide)
Reviewed
FL
Frances Littlejohn
US ·1 review
Everything went smooth, fast shipping, top quality. Nothing to complain about.Haven’t tested the product yet, but I have zero doubt about the quality !
Reviewed
LA
Leonor Azevedo Silva
US ·1 review
no pensaba q iba a funcionar asi d rapido… ya bajé como 10 kilos y mi cara brilla diferente 😅todo llegó rapido y bien empaquetado, no es como esas paginas rarasyo sigo comprando aca seguro
Reviewed
RB
Ronda Bufkin
US ·1 review
Just got my batch independently tested, and the HPLC results came back 0.3% above the stated purity on the CoA. That’s not just impressive, it’s almost unheard of. The analysis showed 99.883% purity versus 99.58% declared, with no detectable residual solvents or endotoxins, and a perfectly sharp single peak, zero degradation products. That level of quality control indicates advanced purification methods, likely involving preparative RP-HPLC and tight cold-chain compliance. Huge props to Prime Lab Peptides. As said to Sofia, you’re not just meeting standards, you’re quietly setting new ones. This is pharmaceutical-grade research material. I won’t go anywhere else. 🤝🏻
Reviewed
AG
Alejandro García López
US ·1 review
no pensaba q iba a funcionar asi d rapido… ya bajé como 10 kilos y mi cara brilla diferente 😅todo llegó rapido y bien empaquetado, no es como esas paginas rarasyo sigo comprando aca seguro.
Reviewed
JH
JAMES HERNANDEZ
US ·1 review
A few months ago, I barely recognized myself in the mirror. I felt sluggish, bloated, and honestly… old. Like I’d aged a decade in just a year. I started Retatrutide from Prime Lab Peptides with low expectations Ive been burned by false promises before. But this time? Everything changedddd!!!!! Within 2 weeks, I started dropping weight,fast!!!!! 10 lbs gone without starving myself wow Whatss that . After 5 weeks, I was down 24 lbs and people around me were asking “what’s your secret? 🤨” but me 🤫 But what really surprised me was GLOW 70mg. I added it to my stack after reading about its skin benefits and wow, my skin was clearer, tighter, and even had this subtle radiance I hadnt seen in years. One friend literally said, “You look like you reversed time.” But still 🤫🤫 I’m 37, but people started saying I look 30 again. No joke, this combo gave me back energy, confidence, and a glow I thought I’d lost forever !!! Prime Lab isnt just another sketchy supplier they changed my life. Everything came fast, clean, and exactly as described. You can tell they actually care about their quality. No underdosed vials. No headaches. Thank you If you’r o n the fence , this is your sign. I’m living proof it works See updated review [https://businessapp.b2b.trustpilot.com/reviews/68a7396fd247d9d64bdf50b9/?locale=en-us&businessUnitId=681f7d9aaa0d32686abce823]
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BS
Brent Smith
US ·1 review
I started Retatrutide from Prime Lab Peptides with low expectations Ive been burned by false promises before. But this time? Everything changedddd!!!!!
Reviewed
MB
Mellie Belisle
US ·1 review
Everyone was talking about them, I was like ok sure, lemme try. Verdict? This ain’t just hype. It’s legit. Like, impressively legit
Reviewed
JM
Joshua Morgan
US ·1 review
People online kept raving about Prime Lab, so I gave in.Ok, I get the hype now. These guys are the real deal. Not some shady supplier that ships unlabelled vials, ignores your emails, or disappears after your payment. No gimmicks, no drama, just pure quality, every single time.
Reviewed
MB
Mabel Biller
US ·1 review
I usually ignore reviews… but curiosity got me. Bro. Now I’m the one leaving a review 😅 That’s how good it is
Reviewed
How reviews work here
Where these reviews come from
Two sources. 1,272 were left by customers on our former public review profile and rebuilt from the notification we received for each one — the wording, rating and date are the customer's own. The rest were written here since, after an order or directly from this page.
Every review is read before it goes live
A human reads each new review for abuse, defamation, personal data or off-topic content — never for its rating. Every decision is logged with its reason, and a published review appears word for word.
Nothing is filtered by rating
The 19 one-star and 8 two-star reviews are kept and readable through the rating filter. A page that only shows praise is not worth reading.
What is not here
Reviews their authors deleted, and reviews taken down before the former profile closed, are excluded — republishing them would put back online what was removed.
How the rating is computed
A plain average of 1,277 ratings, every review counting once. No weighting, no recency bonus.