Northline Labs are very prompt with shipping and once when I had a problem they were quick to correct the issue. My only slight complaint is that the vial packaging sometimes is not of a very high qu... Voir plus
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The products work as stated , price is very fair . The one detail to tighten up would be customer service , I tried multiple times to call to no answer never a call back . They definitely respond to e... Voir plus
L'entreprise a répondu
I’ve ordered from Northline multiple times now and have had no problems whatsoever every time. Checkout process is super easy and delivery is quick. Products come well packaged and definitely are legi... Voir plus
L'entreprise a répondu
I started with Northline Labs a few months ago with one peptide. I was impressed with their customer care and their speed with getting me my product. Also their quality is like no other I’ve had befor... Voir plus
L'entreprise a répondu
À propos de l'entreprise
Écrit par l'entreprise
Northline Labs is an independent United States supplier of research-grade peptides and bacteriostatic water. We work with researchers, laboratory professionals, and biotech operators who need consistent quality and predictable supply. Every batch we ship is third-party verified at 99%+ purity. The Certificate of Analysis for each lot is published on the corresponding product page before the order moves — no waiting, no requesting. Weekday orders typically ship same-day via UPS, and we run a standing buy-one-get-one-50%-off offer across the catalog. We answer customer emails in hours rather than days, and we read every reply. Lot quality, transparency, and responsive support are the three things we work hardest to never miss — and the reason most of our customers come back.
Coordonnées de contact
Etats-Unis
- northlinelabs.org
4,7
Excellent
239 avis
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A répondu à 75 % de ses avis négatifs
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wide variety of peptide options
wide variety of peptide options. Competitive options. Only been using for a couple weeks, but Seem to be working great!
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Greg — catalog breadth + competitive pricing are two we put real weight on. Welcome aboard. — Northline Labs Support Team
Retatutride simply the BEST
After having tasted their peptides particularly Retatutride, our research trials were very successful atestiguan high quality and purity , our team of colleagues have started to purchase batches of 10 vials we are very satisfied with Northline labs
5 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Ernesto — research teams ordering in batch volume is the highest signal we get. Glad lot quality and purity have held across multiple batches. — Northline Labs Support Team
I love Northline Labs
I love Northline Labs. These peptides are great quality and they ship amazingly fast. I had my order within two days. I will be a lifelong customer.
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Brandi — two-day shipping and a lifelong customer is exactly the loop we're trying to build. Appreciate it. — Northline Labs Support Team
I’ve ordered multiple times
I’ve ordered multiple times. Friends have ordered and we’ve all received our product super fast!
Product itself is great. Great results. I personally love GHK-Cu. Highly recommend.
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Austin — repeat orders + friends ordering is the cleanest signal we get. Glad shipping has held across batches. — Northline Labs Support Team
Ordering process was quick and easy
Ordering process was quick and easy, delivery was quick, shipped and at my my door as promised. Quality seem to be great so far and I will be making my next order soon..
7 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Karlos — fast order to door, shipped on schedule, and quality reading right. That's the standard. Appreciate the review. — Northline Labs Support Team
I’ve ordered twice from Northline Labs…
I’ve ordered twice from Northline Labs and both shipments have been quick. The packaging could be a little better and I’d prefer the COA provided with the shipment but otherwise all was as expected and I have had good results.
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Lance — actionable feedback noted. Packaging upgrades are on the list, and we'll evaluate including a COA insert in shipments. In the meantime, the COA for your batch is linked on the product page anytime. Appreciate the honest review. — Northline Labs Support Team
Great products and great customer…
Great products and great customer service! Great company to deal with.
4 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Kenny — short and clear. Appreciate it. — Northline Labs Support Team
10/10
Easy website & check out. Quick shipping. Great product. Love my results!
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks for the 10/10. Easy site + quick shipping is the foundation we work to keep boring and consistent. Appreciate the review. — Northline Labs Support Team
I was worried at alittle worried at…
I was worried at alittle worried at first because they sent me an email stating my delivery date changed but I still received my
Order rather quickly. I will be ordering again!
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Bria — sorry about the delivery-date wobble; UPS occasionally adjusts mid-route. Glad it landed quickly anyway. — Northline Labs Support Team
Réponse de Northline Labs
Thanks Lalla — affordable + fast is the bar. Appreciate the review. — Northline Labs Support Team
Product Works. Helped pain on my shoulder significantly.
Product Works. But I bought the The Mot-C and the BP-157 and there was no water to reconstitute the powder on either. This was a reorder for me. Twice no water. I think if you order stuff that needs to be reconstituted you should have a mechanism in your app that says so or don’t forget to add etc. Yoi need a better description on method as well. Confusing to a layman. Mike Creagan
8 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Mike — great call on the reconstitution prompt. We're working on an add-to-cart reminder for BAC water on peptides that require reconstitution, and clearer protocol guidance on each product page. Appreciate the actionable feedback. — Northline Labs Support Team
Everything was easy
Everything was easy - ordering- payment- quality of product.
15 avril 2026
Avis spontané
Réponse de Northline Labs
Thanks Linda — easy ordering, payment, and quality is exactly the standard. Appreciate the review. — Northline Labs Support Team
Small issue with using Venmo but once…
Small issue with using Venmo but once that was figured out, received product in a timely manner. Product has been great!
24 avril 2026
Avis spontané
Réponse de Northline Labs
Thanks Amy — Venmo can be fiddly on first use; glad it sorted and shipping held. Appreciate you pushing through. — Northline Labs Support Team
Excellent Customer Service & Quick Resolution
I’ve had a great experience overall. On one occasion, my order was incorrect, but the issue was resolved immediately without any hassle. Excellent customer service and very professional staff. Highly recommended!
11 décembre 2025
Avis spontané
Réponse de Northline Labs
Thanks Rene — service recovery on a wrong order matters more than a perfect one. Glad we resolved it cleanly. Appreciate the trust. — Northline Labs Support Team
Great Service/product
First, I’d like to note that they have great customer service. My order got lost and they replaced it within the day after I notified them. Second, they have great peptide selections and are reliable. I will be using Northlinelabs for my peptides for the future.
25 avril 2026
Avis spontané
Réponse de Northline Labs
Thanks Phong — next-day replacement on a lost UPS package isn't always smooth on our end, so glad it worked out. Appreciate the trust on future orders. — Northline Labs Support Team
Order process and shipping
First, the immediate shipping after placing my order! Bravo! Wasted no time to process my order and get it straight to me without any delays or excuses! Amazing work NorthlineLabs!
4 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Jonathan — fast turnaround start to finish is the standard we hold ourselves to. Appreciate the kind words. — Northline Labs Support Team
I started out with just one peptide and…
I started out with just one peptide and now use a few different ones from Northline. Shipping is fast and customer service is great. The only thing I wish they would do is use larger vials for the higher milligram content. Other than that, I would definitely continue to use Northline Labs for my peptides needs.
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks for the feedback. Larger-vial requests are landing repeatedly; we're prioritizing higher-dose vial sizes on the most-requested compounds for the next batch round. Glad shipping and CS have held up across orders. — Northline Labs Support Team
I have used Reta for 4 weeks now
I have used Reta for 4 weeks now, the results are amazing.
30 mars 2026
Avis spontané
Réponse de Northline Labs
Thanks Loann — appreciate the review. Glad lot quality has held over multiple weeks. — Northline Labs Support Team
Réponse de Northline Labs
Thanks Moises — quality + speed is the bar. Appreciate the review. — Northline Labs Support Team
Exelent product
Well, I've ordered for the second time. The products are of very good quality, and the shipping is fast and reliable. I recommend it because I'm already in my third week and I feel good with no side effects, so yes, I recommend it.
11 mai 2026
Avis spontané
Réponse de Northline Labs
Thanks Angelica — second-order customers tell us more than any review can. Glad lot quality and shipping have held both rounds. — Northline Labs Support Team
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