ZC Labs Reviews (2026): Is ZC Labs Legit? — PeptidePrices

Q: Does ZC Labs have a coupon code?

Code PEPTIDEPRICES gives customers 5% off. Use the PeptidePrices referral link on this page and confirm the discount at checkout.

Q: Where does ZC Labs ship?

ZC Labs ships to Contiguous United States, Alaska, and Hawaii. Free FedEx 2Day shipping on orders of $99 or more after discounts; $12.99 flat rate below $99. Orders placed by 12pm ET on business days usually ship the same or next business day. ZC's 30-day money-back guarantee offers a refund or replacement for a quality problem, wrong item, or damage, with nothing to return (one claim per customer). If a retail order takes more than five business days to arrive, ZC emails a $50 coupon for a later order of $100 or more.

Q: Does ZC Labs publish COAs?

COA verified. 69 of 74 reports on file match the lab's own records and name this vendor.

Q: What do customer reviews say about ZC Labs?

We could not find an established independent review profile for ZC Labs. The evidence summary on this page explains what we could and could not check.

Q: What are alternatives to ZC Labs?

The public vendors closest to ZC Labs' 10/10 evidence score are Amino Club (10/10), Puratek Peptides (10/10), and ezPeps (10/10).

Q: What tests do ZC Labs COAs show?

ILS reports show HPLC purity, measured content, identity by retention-time comparison, fentanyl immunoassays where printed, ICP-MS metals, PCR microbial screening and USP endotoxin. Four new specific official records are linked with numerical/status/qualifier differences preserved separately. Freedom reports retain their report-specific identity, purity and measured content.

Jack Ryan; Lorri May

ZC Labs

Evidence score: 10/10

ZC Labs gets our 10/10 rating (Highly Trusted), with 74 lab reports (COAs) on file. See how scores are calculated →

Visit ZC Labs ↗

How we scored ZC Labs

Reviewed by Jack Ryan, co-founder & editorial lead · Updated October 3, 2026

COA practices 40%10/10

Reputation 20%9.5/10

Transparency 20%10/10

Operations 20%10/10

The four factors average 9.9 by weight, which rounds to 10/10.

Direct answer

Is ZC Labs legit?

We rate ZC Labs10/10. October 4 review retains 74 complete public certificates:70 prior reports with their dated 69 matches to lab records and one archived Freedom no-match, plus four new two-page ILS reports. All four new exact official records completed in Chrome and identify ZC Labs, the printed lot and report/access codes. Three source-version comparisons remain in conflict: KLOW 80mg chromium 2.521ppm versus official Not Detected, and two GLP-3R reports whose source endotoxin labels say Reported while the official page says PASS. The fourth is linked with a chromium qualifier difference, source Not Detected versus official<LOQ; it is not promoted as a new exact match. Numeric purity/content/endotoxin values agree for the three GLP-3R reports. GLP-3R10mg black reports 99.57% purity,10.48mg and endotoxin NMT 0.05EU/mL;30mg red reports 99.89%,31.22mg and 0.215EU/mL. These status/qualifier changes are distinct from assay failures. Current shipment lots remain unconfirmed.

COA evidenceCOA quality 10/10COA verified69 of 74 reports on file match the lab's own records and name this vendor

Testing labs: Freedom Diagnostics, ILS Laboratories

Browse 74 report records in the COA library →

Evidence summary

ZC Labs COAs and evidence

ZC Labs earns 10/10 from its factor scores. Its expanded 74-certificate archive preserves 69 prior matches to lab records, one archived Freedom no-match, and four newly completed ILS source-version comparisons with exact differences retained.

PeptidePrices users rate ZC five stars for fast shipping, packaging, prices and service, though that record is young. Match the certificate to the exact lot, and note that code peptideprices gives 5% off single vials only. Free FedEx 2Day shipping starts at $99 after discounts.

Laboratory evidence

October 4 review retains 74 complete public certificates:70 prior reports with their dated 69 matches to lab records and one archived Freedom no-match, plus four new two-page ILS reports. All four new exact official records completed in Chrome and identify ZC Labs, the printed lot and report/access codes. Three source-version comparisons remain in conflict: KLOW 80mg chromium 2.521ppm versus official Not Detected, and two GLP-3R reports whose source endotoxin labels say Reported while the official page says PASS. The fourth is linked with a chromium qualifier difference, source Not Detected versus official<LOQ; it is not promoted as a new exact match. Numeric purity/content/endotoxin values agree for the three GLP-3R reports. GLP-3R10mg black reports 99.57% purity,10.48mg and endotoxin NMT 0.05EU/mL;30mg red reports 99.89%,31.22mg and 0.215EU/mL. These status/qualifier changes are distinct from assay failures. Current shipment lots remain unconfirmed.

What the reports measure

The archive includes 28 ILS and 46 Freedom certificates. New ILS reports preserve complete two-page originals and actual official comparisons. KLOW 80mg reports 83.79mg measured blend content, with components summing to 83.79mg,99.63% purity and 0.173EU/mL endotoxin. Its source chromium 2.521ppm differs from official Not Detected. Recent GLP-3R10/30mg reports retain numeric results and distinguish official PASS labels from source Reported labels.

Exact product coverage

Four additional ILS reports extend the archive through September 30, 2026. The September24 catalog review found 27 of 28 exact product/strength/unit controls; that dated baseline remains. New mismatch between the vendor's copy and the lab's version/qualifier records stay archive-only. Current shipment lots remain unconfirmed; the library uses printed batch labels.

What PeptidePrices users say

Fourteen PeptidePrices users have posted approved reviews of ZC Labs, and all 14 rate it five stars. Thirteen were posted on September 24, 2026; the other on September 15. The most common themes are fast delivery (one reviewer ordered on a Wednesday and received the order that Friday), careful packaging, low prices and frequent deals, and fast, direct replies from the owner and support team. Several mention free extras and giveaways, and several say they value the COAs on ZC's site. One reviewer reports a missing vial on a first order that support corrected within minutes. These are PeptidePrices user reviews, not independent third-party ratings.

Shipping, support and guarantees

ZC ships by FedEx 2Day to the contiguous United States, Alaska and Hawaii. Orders placed by 12pm ET on business days usually ship the same or next business day. Shipping is free on orders of $99 or more after discounts and $12.99 below that. ZC's 30-day money-back guarantee covers a product that does not match its COA, a wrong item, or damage: the customer chooses a refund or a replacement and returns nothing, with one claim per customer. If a retail order takes more than five business days to arrive, ZC emails a $50 coupon for a later order of $100 or more. Support is by email (support@zc-labs.com), Monday to Friday, 9am to 5pm ET. Card checkout was confirmed in July 2026; ZC's FAQ also lists Zelle, CashApp, bank transfer and cryptocurrency.

Promotions and coupon

ZC's "Free Peps for Life" sweepstakes accepts entries from September 11 to September 30, 2026, with a drawing on or about October 8, 2026. Orders of $199 or more after discounts earn one to 20 entries by order size, and a free mail-in entry is available. The prize is five single vials per month for as long as ZC operates, with an approximate retail value of $3,899.40 for the first 12 months. Entry is limited to US residents aged 21 or older; ZC's official rules apply. Code peptideprices gives 5% off single vials; 5-vial and 10-vial packs are not discounted.

Company details

ZC Labs is operated by Zc Labs LLC. The original zclabs.shop domain was registered on May 4, 2026. The company publishes a PO box in Myrtle Beach, South Carolina, and a support email. Affiliate status does not affect the rating.

Details

Payment methods: Credit/debit card
Shipping: Free FedEx 2Day shipping on orders of $99 or more after discounts; $12.99 flat rate below $99.
Orders placed by 12pm ET on business days usually ship the same or next business day.
ZC's 30-day money-back guarantee offers a refund or replacement for a quality problem, wrong item, or damage, with nothing to return (one claim per customer).
If a retail order takes more than five business days to arrive, ZC emails a $50 coupon for a later order of $100 or more.

Reviews

★★★★★5.0/5from 18 PeptidePrices reader reviews

Read all 18 →

Reader reports are customer experiences. They are not laboratory evidence.

Independent external review aggregate not established yet.

In stock: 24 products
Ships to: Contiguous United States, Alaska, and Hawaii
Prices checked: Oct 24, 2026

Products (24)

24 products

Peptide	Price	Package	Stock
GLP-3R3-test panel COA verified Freedom Diagnostics · Report date Jul 19, 2026	$74.99	30mg	In stock	View listing ↗
GLP-3R3-test panel COA verified Freedom Diagnostics · Report date Aug 26, 2026	$34.99	10mg	In stock	View listing ↗
GLP-2T3-test panel COA verified Freedom Diagnostics · Report date Aug 1, 2026	$24.99	10mg	In stock	View listing ↗
GLP-2T7-test panel COA verified ILS Laboratories · Analysis date Jun 10, 2026	$49.99	30mg	In stock	View listing ↗
BPC-1573-test panel COA verified Freedom Diagnostics · Report date Aug 14, 2026	$27.99	10mg	In stock	View listing ↗
TB-5003-test panel COA verified Freedom Diagnostics · Report date Jun 9, 2026	$41.99	10mg	In stock	View listing ↗
MOTS-c3-test panel COA verified Freedom Diagnostics · Report date Aug 4, 2026	$59.99	40mg	In stock	View listing ↗
MOTS-c7-test panel COA verified ILS Laboratories · Report date Sep 1, 2026	$34.99	10mg	In stock	View listing ↗
NAD+7-test panel COA verified ILS Laboratories · Report date Aug 12, 2026	$34.99	500mg	In stock	View listing ↗
NAD+3-test panel COA verified Freedom Diagnostics · Report date Aug 4, 2026	$54.99	1000mg	In stock	View listing ↗
Semax7-test panel COA verified ILS Laboratories · Analysis date Aug 11, 2026	$27.99	10mg	In stock	View listing ↗
Selank3-test panel COA verified Freedom Diagnostics · Report date Jun 29, 2026	$23.99	10mg	In stock	View listing ↗
Tesamorelin3-test panel COA verified Freedom Diagnostics · Report date Aug 9, 2026	$49.99	10mg	In stock	View listing ↗
Cagrilintide3-test panel COA verified Freedom Diagnostics · Report date Sep 23, 2026	$59.99	10mg	In stock	View listing ↗
GHK-Cu (Copper Peptide)3-test panel COA verified Freedom Diagnostics · Report date Aug 4, 2026	$29.99	100mg	In stock	View listing ↗
KLOW Protocol3-test panel COA verified Freedom Diagnostics · Report date Aug 4, 2026	$69.99	80mg	In stock	View listing ↗
Wolverine7-test panel COA verified ILS Laboratories · Report date Aug 14, 2026	$59.99	20mg	In stock	View listing ↗
Epithalon (Epitalon)3-test panel COA verified Freedom Diagnostics · Report date Jun 29, 2026	$44.99	50mg	In stock	View listing ↗
SS-31 (Elamipretide)7-test panel COA verified ILS Laboratories · Report date Sep 4, 2026	$44.99	10mg	In stock	View listing ↗
Melanotan-2 (MT-2)7-test panel COA verified ILS Laboratories · Analysis date Aug 11, 2026	$22.99	10mg	In stock	View listing ↗
5-Amino-1MQ3-test panel COA verified Freedom Diagnostics · Report date Aug 4, 2026	$44.99	50mg	In stock	View listing ↗
DSIP (Delta Sleep-Inducing Peptide)3-test panel COA verified Freedom Diagnostics · Report date Jul 21, 2026	$29.99	10mg	In stock	View listing ↗
Lipo-C / Lipo-B Injectable Blend	$34.99	216mg	In stock	View listing ↗
CJC-1295 No DAC + Ipamorelin3-test panel COA verified Freedom Diagnostics · Report date Jul 4, 2026	$37.99	10mg	In stock	View listing ↗

PeptidePrices community

ZC Labs customer reviews

Customer experience ratings · Separate from our editorial score.

← All vendor reviews

5.0/5★★★★★

18 customer reviews

Rating breakdown

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18 reviews for ZC Labs

Anonymous reader · Oct 15, 2026

★★★★★

Great community

ZC Labs has the best community ever!

Anonymous reader · Sep 27, 2026

★★★★★

Astonished that a company this affordable is this high quality. Never going back to any other company.

Lorri May · Sep 26, 2026

★★★★★

ZC Labs stand beside their products and customers. Have always been the best pep and prices since they have started. Also they always have a sale.

Anonymous reader · Sep 25, 2026

★★★★★

This is some of the best quality I’ve found at these prices. I’m so glad I came across ZC Labs, and their customer service has been absolutely amazing. I’ve had a great experience.

Anonymous reader · Sep 24, 2026

★★★★★

⭐⭐⭐⭐⭐ HIGHLY RECOMMEND ZCLABS! I can’t say enough good things about ZCLABS. From the quality and purity of their products to their beyond-amazing prices, my experience has been outstanding. One thing I really appreciate is the transparency. Their COAs are available right on the website, which gives me confidence in knowing exactly what I’m purchasing. Combine that with fast shipping, incredible prices, and some of the best customer service I’ve experienced, and ZCLABS really stands out. My experience with ZCLABS has genuinely had a positive impact on my life and helped me feel like a better version of myself. That means more to me than I can put into words. If you’re looking for a company that takes quality, transparency, affordability, and customer service seriously, I highly recommend checking out ZCLABS. ⭐ Amazing quality ⭐ Great prices ⭐ Fast shipping ⭐ Outstanding customer service ⭐ COAs available for transparency ZCLABS has earned my trust and my recommendation!

Sabrina · Sep 24, 2026

★★★★★

Overall extremely satisfied with zc labs! Ordered Wednesday received Friday so insanely fast shipping. Can’t speak on customer service as i’ve never had a problem to even need to contact. Community surrounding company is far beyond what anyone could ask for so caring<3 Website is easy to navigate and there’s constant deals going on as well as prices are beyond cheap it’s insane they are still in business! Peppers always outstanding and they normally throw in little freebies ( gotta love it )Owner has been nothing except transparent, helpful, always full of energy, and ready to help his community. Fully love and recommend!

Lizette chavez · Sep 24, 2026

★★★★★

ZC Labs is my go to! The prices are unbeatable, they respond so fast any questions you may have. And peps are phenomenal! I started with one abd now I’m ordering all my other peps from them. Can’t tell you enough for upgrading my lifestyle. I feel so good better than ever. Thanks ZC Labs!!

yams · Sep 24, 2026

★★★★★

The only company I buy from! Shipping is always incredibly fast, everything is packaged with care, and they’re always doing fun giveaways for their customers. You can genuinely tell how much the owner cares about both his customers and the quality of his products. Everything I’ve received has been top-notch, and the customer service is just as impressive. Highly recommend!

Karla R · Sep 24, 2026

★★★★★

Every order with ZC Labs has gone above and beyond my expectations. Their packaging is top notch, products are amazing quality, customer service is great, but the cherry on top is their affordable pricing. I will be a customer for my research materials for life.

Anonymous reader · Sep 24, 2026

★★★★★

Let me tell you guys all about ZClabs. I went on a HUNT (for weeks) for affordable peptides. I thought it was an unachievable dream after so many “legit companies”. So many of them have fake COAs. If you aren’t verifying those then what are you doing? Then one day scrolling through Peptideprices, I came across ZClabs and I’m so grateful I did!! I went through every single COA that was posted and verified them. I read so many reviews much like this one and decided to take a chance. I got my first and second order already and I’m waiting on my third, which was ordered yesterday and is coming tomorrow! My first order I was missing a vial which wasn’t the end of the world. Everyone is human and humans make mistakes. I reached out to their customer service and they fixed the mistake within a couple of minutes. Like I said already you get your order quick but it also comes very carefully packaged. Give ZClabs a try you won’t regret it!

Panda · Sep 24, 2026

★★★★★

From start to finish communication is top tier fast shipping what they say they do. Very professional five stars from. Nothing beats when you actually can talk to someone and you get a response almost instantly very reasonable pricing

GeeBee · Sep 24, 2026

★★★★★

Zc labs is the only company that I have a 100% trusted great costumer service great prices actually affordable it’s been life changing he genuinely cares about the people and it shows shipping is great! Packaging is great! Always keeps us in the loop! Overall just amazing no stress solid company

Kachow Queen · Sep 24, 2026

★★★★★

ZC Labs customer service is beyond anything else! If there's ever a problem with your order, the owner himself is very quick to make anything right (even adding stuff to my order last minute that I forgot!) He also places everything on safety. The owner has previously held out of stock products until COAs arrive in the name of safety over profits. An industry full of skepticism of results and sources, ZC is an absolute ray of light! And finally, the prices CAN'T BE BEAT!! ZC has actually lowered prices JUST BECAUSE THEY CAN! ZC Labs truly believes in the miracle and healing of this industry and wants it to be as accessible to everyone as possible. I've seen incredible results using their products, and I can't wait for them to expand their selection more!

Kaleb “Spirit” · Sep 24, 2026

★★★★★

ZC LABS IS LEGIT! 🔥 Genuinely one of the best customer service experiences I’ve had. They’re responsive, respectful, reliable, and QUICK to take care of their customers if an issue comes up. No getting ignored, no runaround—they actually stand behind their business and make things right. On top of that, their prices are hard to beat. Great prices, fast communication, and a company that actually seems to care about keeping its customers happy. I’ve had an awesome experience with ZC Labs and wouldn’t hesitate to recommend them based on the service I’ve received. And apparently the owner can dance too, so there’s that. 😂🕺 ⭐️⭐️⭐️⭐️⭐️

Rosario · Sep 24, 2026

★★★★★

Impeccable customer service and pricing for all your research needs. Genuinely the best.

Jonathan B · Sep 24, 2026

★★★★★

ZC Labs is clearly the top choice for meeting your needs. You are unlikely to find a superior lab or a lower cost. Their shipping is rapid, and they consistently package items with care. Give them a try—you will not regret it.

Yaricza Arreola · Sep 24, 2026

★★★★★

Zc labs has honestly changed my life thanks to his prices and products im actually able to afford them and become happier with myself. I’ve been able to lose weight and be happier. All his products are tested and he is always open to have conversations when needed or answer any questions! From the 1st order to the 8th I’ve truly had the best experience. Customer service is amazing and products and freebies he offers is the best! I’ve never had any issues with an order I’ll continue to support ZC labs and his amazing products! No one beats the prices and shipping! The customer service is the best ! Recommend to everyone!

Anonymous reader · Sep 15, 2026

★★★★★

I have ordered several times from ZC Labs. Shipping was fast, and I received quality products. I will continue with them, and recommend them to everyone.

Market prices collected Oct 24, 2026

Market listing prices

Five cheapest in-stock package prices per compound across every tracked vendor — not just ZC Labs.

Epithalon (Epitalon) listing prices

30 collected daysSep 25, 2026 – Oct 24, 2026

Latest Oct 24, 2026$19.99$23.09$23.39$24.00$24.99

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 24, 2026	$19.99	$23.09	$23.39	$24.00	$24.99
Oct 23, 2026	$19.99	$23.09	$23.39	$24.99	$25.00
Oct 22, 2026	$19.99	$23.39	$24.99	$25.00	$25.00
Oct 21, 2026	$19.99	$23.39	$24.99	$25.00	$25.00
Oct 20, 2026	$19.99	$23.39	$24.00	$24.99	$25.00
Oct 19, 2026	$19.99	$23.39	$24.00	$24.99	$25.00
Oct 18, 2026	$19.79	$19.99	$23.39	$24.00	$24.99
Oct 17, 2026	$19.79	$23.39	$24.00	$24.99	$25.00
Oct 16, 2026	$19.79	$23.39	$24.00	$24.99	$25.00
Oct 15, 2026	$22.00	$23.39	$24.00	$24.99	$25.00
Oct 14, 2026	$19.79	$22.00	$23.39	$24.00	$24.99
Oct 13, 2026	$19.79	$23.39	$24.00	$24.74	$24.99
Oct 12, 2026	$19.79	$20.00	$23.39	$24.00	$24.74
Oct 11, 2026	$19.79	$20.00	$23.39	$24.00	$24.74
Oct 10, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 9, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 8, 2026	$19.79	$19.99	$20.00	$23.39	$24.00
Oct 7, 2026	$19.99	$23.39	$24.00	$25.00	$26.32
Oct 6, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Oct 5, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Oct 4, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Oct 3, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Oct 2, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Oct 1, 2026	$19.99	$23.39	$24.00	$26.32	$26.95
Sep 30, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Sep 29, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Sep 28, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Sep 27, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Sep 26, 2026	$19.99	$23.39	$24.00	$26.32	$26.73
Sep 25, 2026	$19.99	$23.39	$24.00	$26.32	$26.73

Vendors in the cheapest five

5 / 14

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Pure Peptides UK	30	$23.39 Oct 24, 2026
Real Peptides	27	$24.00 Oct 24, 2026
IDUN Peptides	23	$19.99 Oct 24, 2026
Alpha Peptides	13	$26.32 last in top five Oct 7, 2026
Studz Peptides	12	$24.99 Oct 24, 2026

Top 5 of 14 vendors that reached the cheapest five

Lipo-C / Lipo-B Injectable Blend listing prices

30 collected daysSep 25, 2026 – Oct 24, 2026

Latest Oct 24, 2026$34.99$35.00$39.99$58.49—

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 24, 2026	$34.99	$35.00	$39.99	$58.49	—
Oct 23, 2026	$34.99	$35.00	$39.99	$58.49	—
Oct 22, 2026	$35.00	$39.99	$58.49	$60.00	—
Oct 21, 2026	$58.49	$60.00	—	—	—
Oct 20, 2026	$58.49	$60.00	$98.05	$107.29	—
Oct 19, 2026	$58.49	$60.00	$97.45	$106.63	—
Oct 18, 2026	$34.99	$58.49	$60.00	$97.45	$106.63
Oct 17, 2026	$34.99	$58.49	$60.00	$97.45	$106.63
Oct 16, 2026	$34.99	$58.49	$60.00	$97.14	$106.29
Oct 15, 2026	$34.99	$58.49	$60.00	$97.05	$106.20
Oct 14, 2026	$34.99	$58.49	$60.00	$96.90	$106.03
Oct 13, 2026	$34.99	$58.49	$60.00	$96.76	$105.88
Oct 12, 2026	$29.99	$39.99	$58.49	$60.00	—
Oct 11, 2026	$29.99	$39.99	$58.49	$60.00	—
Oct 10, 2026	$29.99	$39.99	$58.49	$60.00	—
Oct 9, 2026	$29.99	$58.49	$60.00	—	—
Oct 8, 2026	$29.99	$58.49	$60.00	—	—
Oct 7, 2026	$29.99	$58.49	$60.00	—	—
Oct 6, 2026	$29.99	$58.49	—	—	—
Oct 5, 2026	$29.99	$58.49	—	—	—
Oct 4, 2026	$29.99	$58.49	—	—	—
Oct 3, 2026	$29.99	$58.49	—	—	—
Oct 2, 2026	$29.99	$58.49	—	—	—
Oct 1, 2026	$29.99	$58.49	—	—	—
Sep 30, 2026	$58.49	—	—	—	—
Sep 29, 2026	$29.99	$58.49	—	—	—
Sep 28, 2026	$29.99	$58.49	—	—	—
Sep 27, 2026	$58.49	—	—	—	—
Sep 26, 2026	$58.49	—	—	—	—
Sep 25, 2026	$58.49	—	—	—	—

Vendors in the cheapest five

5 / 6

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
T-Core Biotech	30	$58.49 Oct 24, 2026
ZC Labs	22	$34.99 Oct 24, 2026 +16.7%
American Amino & Peptides	16	$60.00 last in top five Oct 22, 2026
NextEdge Peptides	8	$98.05 last in top five Oct 20, 2026 +1.3%
Summit Research Supply	6	$39.99 Oct 24, 2026

Top 5 of 6 vendors that reached the cheapest five

GLP-3R listing prices

30 collected daysSep 25, 2026 – Oct 24, 2026

Latest Oct 24, 2026$23.00$24.95$25.99$27.00$27.00

30 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Oct 24, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 23, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 22, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 21, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 20, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 19, 2026	$23.00	$24.95	$25.99	$27.00	$27.00
Oct 18, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 17, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 16, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 15, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 14, 2026	$25.99	$27.00	$27.00	$27.00	$30.00
Oct 13, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 12, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 11, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 10, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 9, 2026	$25.00	$25.99	$27.00	$27.00	$28.99
Oct 8, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 7, 2026	$25.99	$27.00	$27.00	$27.00	$28.99
Oct 6, 2026	$24.95	$25.99	$27.00	$27.00	$27.00
Oct 5, 2026	$24.95	$25.00	$25.99	$27.00	$27.00
Oct 4, 2026	$24.95	$25.00	$25.99	$27.00	$27.00
Oct 3, 2026	$24.95	$25.00	$25.99	$27.00	$28.99
Oct 2, 2026	$24.95	$25.00	$25.99	$27.00	$28.99
Oct 1, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 30, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 29, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 28, 2026	$20.21	$25.99	$27.00	$28.99	$30.00
Sep 27, 2026	$20.21	$25.99	$27.00	$30.00	$30.00
Sep 26, 2026	$20.21	$25.99	$27.00	$30.00	$30.00
Sep 25, 2026	$20.21	$25.99	$27.00	$28.00	$30.00

Vendors in the cheapest five

5 / 11

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Lost Coast Aminos	30	$23.00 Oct 24, 2026 -14.8%
Modern Research Peptides	30	$25.99 Oct 24, 2026
Step One Ventures	21	$27.00 Oct 24, 2026
Vector Amino Labs	21	$27.00 Oct 24, 2026
Rocky Mountain Compounds	18	$24.95 Oct 24, 2026 +23.5%

Top 5 of 11 vendors that reached the cheapest five

Frequently asked questions

Is ZC Labs legit?: We rate ZC Labs10/10. October 4 review retains 74 complete public certificates:70 prior reports with their dated 69 matches to lab records and one archived Freedom no-match, plus four new two-page ILS reports. All four new exact official records completed in Chrome and identify ZC Labs, the printed lot and report/access codes. Three source-version comparisons remain in conflict: KLOW 80mg chromium 2.521ppm versus official Not Detected, and two GLP-3R reports whose source endotoxin labels say Reported while the official page says PASS. The fourth is linked with a chromium qualifier difference, source Not Detected versus official<LOQ; it is not promoted as a new exact match. Numeric purity/content/endotoxin values agree for the three GLP-3R reports. GLP-3R10mg black reports 99.57% purity,10.48mg and endotoxin NMT 0.05EU/mL;30mg red reports 99.89%,31.22mg and 0.215EU/mL. These status/qualifier changes are distinct from assay failures. Current shipment lots remain unconfirmed. Affiliate links never affect the score.
Does ZC Labs have a coupon code?: Code PEPTIDEPRICES gives customers 5% off. Use the PeptidePrices referral link on this page and confirm the discount at checkout.
Where does ZC Labs ship?: ZC Labs ships to Contiguous United States, Alaska, and Hawaii. Free FedEx 2Day shipping on orders of $99 or more after discounts; $12.99 flat rate below $99. Orders placed by 12pm ET on business days usually ship the same or next business day. ZC's 30-day money-back guarantee offers a refund or replacement for a quality problem, wrong item, or damage, with nothing to return (one claim per customer). If a retail order takes more than five business days to arrive, ZC emails a $50 coupon for a later order of $100 or more.
Does ZC Labs publish COAs?: COA verified. 69 of 74 reports on file match the lab's own records and name this vendor.
What do customer reviews say about ZC Labs?: We could not find an established independent review profile for ZC Labs. The evidence summary on this page explains what we could and could not check.
What are alternatives to ZC Labs?: The public vendors closest to ZC Labs' 10/10 evidence score are Amino Club (10/10), Puratek Peptides (10/10), and ezPeps (10/10).
Does ZC Labs publish verified COAs?: October 4 review retains 74 complete public certificates:70 prior reports with their dated 69 matches to lab records and one archived Freedom no-match, plus four new two-page ILS reports. All four new exact official records completed in Chrome and identify ZC Labs, the printed lot and report/access codes. Three source-version comparisons remain in conflict: KLOW 80mg chromium 2.521ppm versus official Not Detected, and two GLP-3R reports whose source endotoxin labels say Reported while the official page says PASS. The fourth is linked with a chromium qualifier difference, source Not Detected versus official<LOQ; it is not promoted as a new exact match. Numeric purity/content/endotoxin values agree for the three GLP-3R reports. GLP-3R10mg black reports 99.57% purity,10.48mg and endotoxin NMT 0.05EU/mL;30mg red reports 99.89%,31.22mg and 0.215EU/mL. These status/qualifier changes are distinct from assay failures. Current shipment lots remain unconfirmed.
What tests do ZC Labs COAs show?: ILS reports show HPLC purity, measured content, identity by retention-time comparison, fentanyl immunoassays where printed, ICP-MS metals, PCR microbial screening and USP<85> endotoxin. Four new specific official records are linked with numerical/status/qualifier differences preserved separately. Freedom reports retain their report-specific identity, purity and measured content.
What is the ZC Labs coupon code?: Code peptideprices gives 5% off single vials. 5-vial and 10-vial packs are not discounted.
Does ZC Labs offer free shipping?: Yes. FedEx 2Day shipping is free on orders of $99 or more after discounts and $12.99 below that.
What is the ZC Labs Free Peps for Life sweepstakes?: It is a ZC Labs sweepstakes with entries from September 11 to September 30, 2026 and a drawing on or about October 8, 2026. Orders of $199 or more after discounts earn entries, and a free mail-in entry is available. The prize is five single vials per month while ZC operates. ZC's official rules apply.
What do ZC Labs reviews say?: All 14 approved PeptidePrices user reviews rate ZC Labs five stars. Reviewers most often mention fast shipping, careful packaging, low prices and responsive service.