Northline Labs Avis 238

TrustScore 4.5 sur 5

4,7

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Lisez les avis des autres

Noté 5 sur 5 étoiles

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

Noté 5 sur 5 étoiles

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

Noté 5 sur 5 étoiles

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

Noté 4 sur 5 étoiles

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

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

4,7

Excellent

TrustScore 4.5 sur 5

238 avis

5 étoiles
4 étoiles
3 étoiles
2 étoiles
1 étoile

Demande des avis aux clients

Cette entreprise invite régulièrement ses clients à laisser des avis, qu’ils soient positifs ou négatifs.

A répondu à 75 % de ses avis négatifs

Répond généralement dans un délai d'un mois

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Noté 5 sur 5 étoiles

I have been using peptides now for…

I have been using peptides now for about 2 months. And I have been purchasing from a few different vendors. Some have slow delivery. Have limited inventory. Or don't take credit cards. Northline had NONE of these issues. Inventory was great, payments were easy, and delivery was fast! The product was just as promised! I will do my peptide shopping here from now on! Thank you Northline!

6 mai 2026
Avis spontané
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Réponse de Northline Labs

Lisa, glad you found us after comparing options. No limited inventory, easy payments, and fast delivery are exactly what we aim for on every order. Welcome aboard. — Northline Labs Support Team

Noté 5 sur 5 étoiles

I was a satisfied customer.

I was definitely as satisfied customer. Reta is working great! However , I would prefer they use bigger vials for the higher doses. I was supposed to receive a 25% off my next order Coupon code for leaving a review and I never received it. I have sent Northline 2 emails (because there is no phone # to call.) and both emails have been ignored. 🙁 I'm satisfied with the shipping and I would definitely order again if they would send me the 25% coupon code that I was promised for leaving a review.

8 avril 2026
Avis spontané
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Réponse de Northline Labs

Virginia, thank you for the review. Glad shipping and the overall experience are meeting your expectations. We appreciate the feedback on vial sizing — always looking at ways to improve. — Northline Labs Support Team

Noté 4 sur 5 étoiles

Prices are a little high

Prices are a little high, but quality is good. They often run deals and have discounts so it’s more affordable. You get what you pay for though, and quality costs more money. Can’t put a price on health, so all in all 4/5 stars but that missing star probably has more to do with my income level than anything.

13 mai 2026
Avis spontané
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Réponse de Northline Labs

Holly, appreciate the honesty. Quality is where we refuse to cut corners, and we try to offset pricing with our BOGO and regular promotions. Glad you see the value in what we deliver. — Northline Labs Support Team

Noté 4 sur 5 étoiles

Satisfied customer who will continue to order from this company

I have ordered several times, having transparency, efficacy with product, and fast shipping along with affordable pricing has made me a repeat customer. I also enjoy all of the helpful information that they post on social media, I will continue to order from this company. thank you for making a great product.

2 mai 2026
Avis spontané
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Réponse de Northline Labs

Leah, thank you for being a repeat customer. Transparency, fast shipping, and fair pricing are the three pillars we build on — glad they're landing. Appreciate you following our content too. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Excellent Customer Service

I placed my first order last month, everything came exactly as described and was delivered in a timely manner. I will be ordering again!

20 avril 2026
Avis spontané
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Réponse de Northline Labs

Thanks Vicki — first orders matter most, and 'exactly as described + on time' is exactly the bar. Looking forward to seeing you on the next one. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Northlinelabs has been my go to for…

Northlinelabs has been my go to for quality peptides. Competitive pricing and fast delivery. I personally have had a fantastic experience. Will continue to do business with Northlinelabs.

8 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks Thomas — competitive pricing + fast delivery + repeat orders is the loop we work to lock in. Appreciate the trust. — Northline Labs Support Team

Noté 5 sur 5 étoiles

I love how fast the products are…

I love how fast the products are shipped out and arrive. I have experienced better results with their products compared to other brands in the past.

8 avril 2026
Avis spontané
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Réponse de Northline Labs

Shashank, appreciate that. Fast shipping and product quality are two things we never compromise on. Glad we're outperforming what you've tried before. — Northline Labs Support Team

Noté 4 sur 5 étoiles

Great Quality and Packaging, Helpful Label Suggestion

The peptides I’ve received from North Line Labs have arrived very well packaged, protected, and in good condition. So far, my experience with the shipping and product presentation has been very good.

As a suggestion, I think it would be very helpful if the labels had different colors depending on the peptide category, for example recovery, performance, fat loss, sleep/recovery, etc. That would make it much easier to recognize them quickly, especially when managing several vials at the same time.

Overall, it has been a very good experience with the product and packaging. That small detail with the label design would make the organization even more practical.

1 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks Mateo — thoughtful packaging suggestion. Color-coded labeling by compound family is an idea we'll bring back to the operations side. Glad current packaging + presentation held up. — Northline Labs Support Team

Noté 5 sur 5 étoiles

No issues with purity and quality

No issues with purity and quality. Excellent products. Quick shipping. Great customer service!

20 mars 2026
Avis spontané
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Réponse de Northline Labs

Thanks Laurie — purity + quick shipping + responsive CS. That's the bar. Appreciate the review. — Northline Labs Support Team

Noté 5 sur 5 étoiles

I like that your a US based…

I like that your a US based company..your catalog carries many top products..also love the 2 day shipping option..prices are very reasonable!

12 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks Robert — US-based supply chain, broad catalog, 2-day shipping, fair pricing. That's the playbook. Appreciate it. — Northline Labs Support Team

Noté 4 sur 5 étoiles

Received quickly

Received quickly. Peptide came in powder form so I had to research what to do. No instructions are given. Order BAC water with your peptide. I had to send in a second order for that.

12 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks R Mig — noted on the reconstitution instructions. Every product page does have a recon section (BAC water amount, storage temp, stability window), but we hear you that an insert in the package would be easier. Both an in-box quick-start card AND an add-to-cart BAC reminder are on the build list. Sorry for the extra order to get BAC. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Just got first order

Just got first order, ordering was easy and shipping was quick.

8 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks for the first-order review — easy ordering + quick shipping is the standard we hold ourselves to. Welcome aboard. — Northline Labs Support Team

Noté 5 sur 5 étoiles

I have loved my Northline products!

I have loved my Northline products!! They are 3rd party tested. Ordering is the easiest I have ever found. And it arrives as promised quickly! I have shopped at several sites and I will never need to change from Northline ordering!

1 avril 2026
Avis spontané
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Réponse de Northline Labs

Thanks Traci — 'easiest ordering experience' is a high bar, and quick delivery + 3rd-party testing make the whole loop work. Appreciate you choosing us across multiple suppliers. — Northline Labs Support Team

Noté 4 sur 5 étoiles

Overall

Overall, great experience as far as product and processing time. Only wish they would ship using UPS OR FedEx? Will order again, though

1 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks JT — quick clarification: we DO ship UPS on every order. We don't use FedEx (those mentions are typically scam emails, unfortunately common in this category). Glad product + processing held up. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Good customer service

Good customer service . Replied within a couple of hours . Fast shipping on the product . Everything I’ve purchased is legit. Will keep buying from this site .

14 mars 2026
Avis spontané
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Réponse de Northline Labs

Thanks Ashley — hours-not-days is the bar on CSR. Glad both shipping and replies held up. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Great Customer Service!

Great Customer Service!

My delivery was delayed by UPS and I was concerned about the integrity of the peptides. I emailed customer service and they guided me through the entire process and reassuring me that if anything is not right to let them know and they will take care of it. Their reply is fast and clear. Excellent product and excellent service.

11 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks Joseph — UPS delays are out of our hands but how we respond when they happen isn't. Glad the CSR walk-through reassured you and the product landed clean. Appreciate the trust. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Awesome Company

Awesome Company! I picked Northline for my peptides because they are 3rd party tested and verified. They also have a great selection of peptides and strengths. Shipping was very fast, they had great pricing, and I am very happy with the results I've gotten from the peptides. Great company!

2 avril 2026
Avis spontané
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Réponse de Northline Labs

Thanks — third-party testing, broad catalog, and fair pricing are three we put weight on. Glad they came through. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Top tier quality products

Top tier quality products. Shipping was quick.
My husband and I are both seeing tremendous results from the Reta.

12 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks L.T. — quick turnaround on top-tier lots is the bar. Appreciate the review. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Ordering was easy

Ordering was easy, shipping was quick and well packaged! All their email communication kept you up to date on where your order was in the process! Would definitely order from Northline Labs again!

25 mars 2026
Avis spontané
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Réponse de Northline Labs

Thanks Jamie — status emails through every step of the fulfillment process are something we work hard on. Glad they kept you in the loop. Looking forward to the next order. — Northline Labs Support Team

Noté 5 sur 5 étoiles

Fast shipping

Fast shipping, clear communication and a quality product

5 mai 2026
Avis spontané
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Réponse de Northline Labs

Thanks Matt — fast, clear, quality. That's the bar. Appreciate it. — Northline Labs Support Team

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