Pink Peptides Review: Certificates, Prices and Our Rating

Pink Peptides is a women-owned US store that sells research-use-only peptides from pinkpeptides.is. It publishes lab-hosted batch certificates for 12 of its 17 products. Five had no certificate when we checked, and the site contradicts itself on returns, damage claims, cut-off times and product count.

We rate it 8.7 out of 10. We did not order or lab-test products. Everything below comes from Pink Peptides’ website and the lab’s published PDFs, checked on October 23, 2026.

Quick Verdict

What stands out: Certificates hosted on the lab’s own domain, net content results on every published report, a scratch-code check for boxes and a strict research-use-only stance.

Where it falls short: Five products without a certificate, endotoxin and water-content tests that are claimed but not shown, no named manufacturing facility and several policy statements that contradict each other.

Bottom line: A promising, very new store with better paperwork than many competitors, held back by gaps it can fix.

What Is Pink Peptides?

Pink Peptides describes itself on its About page as a research peptide brand “created by women, for women in research,” and its FAQ says it is women-owned and women-run. Its pitch is transparency: full formulas on every label and certificates matched to lot numbers.

The store is new. Its policies were last updated on September 28, 2026, and every certificate on its lab reports page is dated September 26, 2026. The site gives no founding date, company name or business address.

All products are sold for laboratory research only, and the How it works page says the store gives no dosing, administration or protocol guidance.

Not the Same as pinkpeptides.net

A separate website, pinkpeptides.net, also trades under the Pink Peptides name and also calls itself women-owned. This review covers pinkpeptides.is only.

Catalogue and Pricing

The shop page lists 17 products, all sold as single lyophilized (freeze-dried) vials. Three are blends. Free US shipping applies to orders over $100. Prices below were checked on October 23, 2026.

The FAQ says the store also sells 10-vial kits and capsule bottles. We found no kits or capsules on the shop page or on any product page.

Product pages show logos for Visa, Mastercard, Zelle and several cryptocurrencies. We did not go through checkout, so we can’t confirm which payment methods are active.

Testing and Certificates

Pink Peptides uses Freedom Diagnostics Testing, a lab in Franklin, Tennessee, that tests research peptides. Eleven certificates link to the lab’s own report server, and the CJC-1295 report, linked from Pink Peptides’ site, is on the lab’s server too. Each certificate carries a search code you can check on the lab’s certificate lookup page.

All 12 samples were received on September 25, 2026, and reported on September 26, 2026.

What the Certificates Include

Every report lists three tests: identity by LC-MS, purity by HPLC with UV detection, and net content. Every result clears the store’s 99% minimum purity spec, and the average purity across all 12 is 99.6%, matching the figure on the lab reports page.

That covers the core of a useful certificate, as our guide on how to read a peptide COA explains, and net content is often missing from vendor reports.

What’s missing matters too. The FAQ says every batch is also tested for water content by Karl Fischer titration and for endotoxin by LAL assay, and every product page says each batch goes to the lab for “identity, purity and endotoxin testing.” None of the 12 certificates show an endotoxin or water-content result, although the lab lists endotoxin, sterility and heavy-metal testing among its services.

Net Content Against the Label

Across the 13 net content results (the blend reports two), eight came in above the label amount and five below.

• Above the label: Epitalon measured 13.92 mg against 10 mg (39% over). Tesamorelin, CJC-1295, MOTS-c and BPC-157 were 12% to 18% over, and Melanotan II was 6.5% over.
• Below the label: the TB-500 portion of the blend measured 4.68 mg against 5 mg (6.4% under), and Oxytocin measured 4.80 mg against 5 mg (4% under).
• Within about 2%: Ipamorelin, TB-500, PT-141 and Glutathione.

These are single results from one batch each, not a guide to every future vial.

Products Without a Certificate

GLOW, KLOW, Kisspeptin-10, NAD+ and Retatrutide had no certificate on the lab reports page or their product pages. Retatrutide was out of stock, but the other four were listed as in stock. Each of those product pages says “the certificate for the current batch is published here before the first vial ships.” The DAC version of CJC-1295 and the 2 mg Oxytocin also have no report of their own.

The Verify Program

The verify page says every box carries a unique code under a silver scratch sticker. You enter it on the site to confirm the vial is genuine, and the store says it records only when and how often each code is checked. If the sticker is already scratched when the box arrives, the page says not to use the vial and to send a photo. We had no box to test it with, so we can’t say how the check performs.

Shipping, Returns and Support

According to the How it works page, orders placed before 2 pm ET on a business day ship the same day, with 2-day tracked delivery across the US. Orders ship in a plain, unbranded mailer with a printed certificate. International buyers are responsible for import rules.

The refund policy covers four situations:

• Unopened vials: returnable within 14 days of delivery for a full refund of the product price
• Broken vials or broken seals: replaced free if you send a photo within 48 hours
• Lost parcels: reshipped or refunded if tracking stalls for more than five business days
• Wrong items: replaced at the store’s cost

Support runs by email at support@pinkpeptides.is and a contact form, Monday to Friday, 9 am to 6 pm ET, with a stated reply within one business day, per the contact page.

The policies are generous on paper, but they disagree:

• The refund policy accepts unopened returns within 14 days, but the FAQ and contact page say returns can’t be accepted once an order has shipped.
• The homepage says to report damage “within 7 business days,” while every other page says 48 hours.
• The homepage says orders “paid by 12 pm ET” ship the same day, and the site’s countdown timer is set to noon, while other pages say 2 pm ET.

Strengths

• A named, checkable lab. Reports come from Freedom Diagnostics Testing and are served from the lab’s own domain, with search codes for its lookup tool.
• Net content on every report. Each certificate shows how much peptide was measured, not just purity.
• Full blend formulas. The amount of each peptide in GLOW, KLOW and the BPC-157 + TB-500 blend is printed on the label, and the blend certificate measures both components separately.
• Strict research-use framing. The store refuses to give dosing or usage advice and requires buyers to be 21 or older.
• Clear damage terms. Free replacement for damaged deliveries.

Weaknesses and What We’d Like to See

• Certificates for every product. GLOW, KLOW, Kisspeptin-10 and NAD+ are on sale without a published report, even though their own pages promise one before the first vial ships.

Who Pink Peptides Suits

Pink Peptides is a great site for researchers who want a supplier with a focus on peptides for women, from a female-owned and female-led brand. It also suits researchers who want certificates they can trace to the lab and blends with every amount disclosed. Match the lot number on your vial to the published certificate, and ask support for a report before buying any product that lacks one.

It’s still new to the space, so its track record is just getting started. Our guide to the best peptide vendors explains the checks to run on any seller.

Research peptides aren’t approved for human use, and the FDA lists BPC-157, TB-500 and several other popular peptides among bulk drug substances that may present significant safety risks in compounding. Check the rules where you live in our guide on whether peptides are legal.