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.
I've ordered from them a few times now and honestly no one compares. The speed, the quality, and the care they put into your order - unmatched. my go-to for peps. Just hoping they restock soon I don't have to shop around lol
Reviewed
JP
Justin Palmer
US ·1 review
Had a pretty technical question about formulation, and the answer I got was super in-depth. You can tell they actually know what they doing. That kinda attention makes you feel like you can really trust them
Reviewed
PP
Patrick Peterson
US ·1 review
USPS free ship hit my door in 3 days, vials packed tight in the box. Quality’s crazy, felt it day one.
Reviewed
TH
Tyler Hayes
US ·1 review
Fast shiping, clean purity, zero hassle.
Reviewed
LD
Lindsay Dean
US ·1 review
I like ordering from here, quality’s high and always reliable.
Reviewed
JJ
Jerry James
US ·1 review
Grabbed 3 vials of Tirze 30mg in bulk, used SAVE20 code. Got the USPS free shipping, landed in 3 days. Bubble wrap was tight, and they tossed in a 10ml bac water taped up like a little extra gift. Support checked in all along to make sure the freebie made it safe. Little touches like that go a long way.
Reviewed
JW
Jenna Willis
US ·1 review
USPS free ship hit my door in 3 days, vials packed tight in the box. Quality’s crazy, felt it day one.
Reviewed
LB
Larry Bailey
US ·1 review
Soooo happy with this company. There was a shipping mess up that wasn't even their fault, and they still fixed it and upgraded me to overnight. They always throw in little perks for repeat costumers, send thank you notes, and answer emails super fast (like under 30 min)! My research legit saved my life. I get emotional thinking about how things were before vs now.
Reviewed
CS
Chloe Sullivan
US ·1 review
Shipped quick and packaging was solid. Just saying tho, UPS missed the 3-day window twice now. I get it's not on you, but they not doing what they promise.
Reviewed
YR
Yissa Rodriguez
US ·1 review
Es la primera vez comprando con ellos pero algo llamo mi atención su vial tan limpio ósea se ve de calidad
Reviewed
ND
Nathan Douglas
US ·1 review
Third time ordering and still spot on. Purity’s high, shipping’s quick, packaging solid. Don’t even bother checking other places now, this my go-to.
Reviewed
BP
Brandon Pierce
US ·2 reviews
Vials came in crystal clear, no floaters or anything weird, and the volume was spot on. Def feels like they take QC seriously
Reviewed
BP
Brandon Pierce
US ·2 reviews
Vials came in crystal clear, no floaters or anything weird, and the volume was spot on. Def feels like they take QC seriously
Reviewed
KF
Kaitlyn Fox
US ·1 review
Ordered a few times now, always impressed. Quality’s always there, peptides show up fast, sealed tight and got COAs with ‘em. You can tell lab standards are solid. Don’t see myself ordering from anyone else.
Reviewed
JW
Jason Ward
US ·1 review
Pep veteran here, have used roughly 5-6 peptide companies. This one is on another level. The cakes are prestine, clean, and effective. I placed an order, did some more reaseach, then placed another order a few hours later. They combined my orders, refunded the shipping on both and applied free shipping since I hit the free shipping reward. The prompt and professional customer service is gold stanard, only if comcast would take a page our of your book. Thankyou!
Reviewed
HP
Hailey Parker
US ·1 review
Shipped quick and packaging was solid. Just saying tho, UPS missed the 3-day window twice now. I get it’s not on you, but they not doing what they promise.
Reviewed
MC
Morgan Cross
US ·1 review
Purity was like 0.2% off the COA, already a solid start. I’m sold.
Reviewed
SW
Shane Walters
US ·1 review
Shipping’s fast and the peptides always top quality. Price is super fair too!
Reviewed
HL
Hugo Lemoine
US ·1 review
Best spot for peptides!! Prices are awesome too. Me and all my friends order from here and we all love it.
Reviewed
NO
Nuria Ortega
US ·1 review
Shipped quick and packaging was solid. Just saying tho, UPS missed the 3-day window twice now. I get it’s not on you, but they not doing what they promise.
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.