Sealed Peptides Review
Scored 3.33/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 1
COAs on file
- Confirmed at the lab
- 1
Confirmed at the lab
- Products
- 31
Products
- Labs
- 1
Labs
3.33/ 10
- Lab credibility and recency55%0.4 (show how this was scored)
- Shipping and refund20%7.5 (show how this was scored)
- Pricing15%9.0 (show how this was scored)
- Operating history5%0.7 (show how this was scored)
- Business transparency5%4.5 (show how this was scored)
Weights are fixed for every vendor. Select a row to see how it was scored.
Testing gate applies (limit 6.50); this score is already below it
Third-party testing not established. The gate records that testing could not be verified; it is not a finding of a quality or safety problem.
Is Sealed Peptides legit?
Sealed Peptides scores 3.33 out of 10 (Poor, #90 of 105) as of November 10, 2026 and does not meet our testing gate: 1 of the 30 products we score carries a certificate, 1 confirmed with the issuing lab (a lab we grade A). Its strongest area is pricing (9.0/10) and its weakest is lab testing (0.4/10); its operating history on record covers about two months.
On lab evidence, the heaviest-weighted factor, Sealed Peptides has no third-party testing we could independently verify, with COA work on record from Freedom Diagnostics Testing. The testing gate applies because that testing could not be independently verified (Third-party testing not established); its limit for Sealed Peptides is 6.50, and this score is already below it. Its lowest price per milligram in our data is on NAD+ (see the table below).
How this score was calculated
Every point below follows the published tables in our methodology, with the policy wording we scored and a link to where we read it. Evidence last checked November 9, 2026. Lab credibility is worked product by product from the certificates on file.
Lab credibility0.4/10
Each carried product (lab supplies excluded) is scored from the certificate on file for it, on the published lab rubric: 3 for a published certificate, then points for the laboratory, the verification key, the tests on the certificate and its purity, held to 0 to 10. A certificate that is self-issued, names no laboratory, or comes from a laboratory whose independence is not established scores a flat 2.0; a product with no certificate, a certificate the laboratory’s own record fails, or a posted copy that differs materially from the laboratory’s copy scores 0. Calculated on , the day this page was built; the date each certificate was tested is shown on its row.
- 5-Amino-1MQ0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- BPC-1570.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Cagrilintide0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- CJC-12950.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- DSIP0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- GHK-Cu0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- GLOW0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- HCG0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- IGF-1 LR30.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Ipamorelin0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- KLOW0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- KPV0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- MOTS-c0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Melanotan-10.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Melanotan-20.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- NAD+0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Oxytocin0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- PT-1410.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Retatrutide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-11-08
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.88% (99.7% or higher)
- 0.0Measured content 114.9% of label (90% of label or more)
- Selank0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Semax0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Sermorelin0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- SS-310.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- TB-5000.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Tesamorelin0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
- Thymalin0.0
No certificate on file for this product: scores 0, counted at 0.5 weight because it is not one of the core products.
- Tirzepatide0.0
No certificate on file for this product: scores 0, counted fully because it is one of the core products.
Weighted mean of 30 products (15 non-core products without a certificate counted at half weight): 8.5 ÷ 22.5 = 0.378.
No adjustments.
0.378 = 0.378, rounded to 0.1: 0.4/10.
Testing gate: 1 of 30 products have a certificate from a directory laboratory (not tier D, not self-issued) with the key confirmed at the laboratory. That is fewer than half, so the testing cap applies (see the methodology).
Shipping and refunds7.5/10
- +1
Returns and refunds
"all sales are final. We are unable to accept returns or issue refunds once an order has shipped"; a replacement is issued for items damaged in transit, the wrong product or quantity, a confirmed defect, or a package lost and confirmed undeliverable
All sales final; damaged, wrong and lost items put right by replacement within 7 days of delivery (rule B1: 1).
sealedpeptides.com (opens in new tab) source 2 (opens in new tab)checked
- +2
Lost or damaged parcels
"We will issue a replacement" when "Your order arrives visibly damaged in transit" or "Your package is lost in transit and confirmed undeliverable by the carrier"
A free replacement is stated for both (rule B2: 2).
- +1.5
Dispatch time
"Orders are processed and shipped within 1 business day of payment confirmation" (business days Monday to Friday)
Rule B3: 1.5.
- +1
Tracking on all orders
"Tracking numbers are provided for all shipments."
Rule B4: 1.
- +1.5
Payment you can dispute
"Visa, Mastercard, American Express and Discover are charged when you place the order, through Square's secure form"; Zelle is also offered
Cards at checkout per the payment page and the terms; checkout not reached (nothing added to a cart) (rule B5: 1.5).
sealedpeptides.com (opens in new tab) source 2 (opens in new tab)checked
- +1
Shipping rates published
Rates table: USPS Ground Advantage [6.99 dollars], free at [75 dollars]+; USPS Priority Mail [14.99 dollars], free at [149 dollars]+; UPS 2nd Day Air [25 dollars]; UPS Next Day Air [65 dollars]
Rule B6: 1.
- −0.5
Policies that contradict each other
Payment page: "Free US shipping on orders of [149 dollars] or more, otherwise [14.99 dollars] flat" vs site banner: "Free US shipping on orders [75 dollars]+" (shipping policy: "USPS Ground Advantage is free at [75 dollars] or more, USPS Priority Mail is free at [149 dollars] or more")
The payment page and the banner state different free-shipping thresholds (rule B7). Both read twice on 2026-11-09. Evidence: evidence-local/2026-11-09/sealed-peptides/POLICIES.
sealedpeptides.com (opens in new tab) source 2 (opens in new tab) source 3 (opens in new tab)checked
Total +7.5: 7.5/10.
Pricing9.0/10
We compared Sealed Peptides’s current single-vial prices on 23 products, each matched to the same product and milligrams per vial, with the median price of the other vendors. Its typical price (the median ratio across those products) is 30% below the market median (ratio 0.70), which the published scale maps to 9.0/10. checked
Operating history0.7/10
Counted from September 22, 2026, the earliest dated evidence of this business operating: 1.6 months as of November 9, 2026, which the published table maps to 0.7/10.
The site names no operating company, so no registry start could be used. The store domain sealedpeptides.com was registered 2026-09-22 (RDAP) and no earlier use was found; the first archived capture is 2026-09-23, the terms are dated 2026-10-15, and the only certificate was received by the laboratory on 2026-11-05.
- 2026-09-22 Domain registration: sealedpeptides.com registration 2026-09-22T19:49:07Z rdap.org (opens in new tab)
- 2026-09-23 archive: first Wayback capture (index only; content not read, the archive returned 429) web.archive.org (opens in new tab)
Transparency4.5/10
- 0
Legal entity named
"purchase of products from Sealed Peptides (“we”, “us”)"; no company type or legal entity named on any page
A brand name only (rule C1: 0).
- +1
Business address
"Sealed Peptides, G3282 Miller Rd, Flint, MI 48507"; "Mail only. This is not a pickup or walk-in location; there is no storefront."
3282 Miller Rd is the Seeko Shopping Center, a multi-tenant retail building with units for lease; the vendor says the address is mail only, and no unit, tenant or mailbox store matching it was found, so it is an address we could not classify (rule C3: 1). Evidence: evidence-local/2026-11-09/sealed-peptides/ADDRESS.
sealedpeptides.com (opens in new tab) source 2 (opens in new tab)checked
- +1
Phone number
"Phone / text (810) 309-8278"
Shown to readers (rule C4: 1).
- 0
Named owner or staff
No person is named on any page
Rule C5: 0.
- +1
Dated terms with a governing law
"Last updated: October 15, 2026"; "These Terms are governed by United States federal law and the laws of the state in which Sealed Peptides operates"
Dated and names the United States, as for Vortex Research and Drexa Labs (rule C6: 1).
- +1.5
Testing lab named, certificates published
Lab report library with the Freedom Diagnostics Testing certificate for Retatrutide 100mg
Rule C7: 1.5.
Total +4.5: 4.5/10.
- Pricing: single-vial prices from the product pages and their schema.org data, read 2026-11-09 (US Pacific), matching the vendor's dated price list. No sale or struck-through price is shown. Volume pricing, the first-order discount and the Zelle discount are not counted. For seven products the page text states no vial size and the size is read from the vial label in the product image (BPC-157/TB-500 20mg, HCG 10,000 IU, IGF-1 LR3 1mg, Oxytocin 2mg, PT-141 10mg, Semax 10mg, Tesamorelin 20mg); without them r is 0.737541 over 23 products (pricing 8.8).
- Catalogue: read by plain fetch from server-rendered HTML under a client-side 21+ overlay, which was not clicked. No account, no form, nothing added to a cart.
Shop Sealed Peptides
- Rated 3.33/10 · Poor
- 1 COA confirmed at the issuing lab
- Best value: NAD+ at $0.07/mg
Audit history and why the rating changed
We re-audit vendors against their live COAs and site. Here is what most recently moved this rating, and why.
See the full score history and chart
- Most recent audit · 3.32to3.33
Market prices recalculated on 10 November 2026 after the second catalogue coverage check added 229 listings: pricing 8.9 to 9.0.
- Audit · 3.30to3.32
Market prices recalculated on 9 November 2026 with Simple Peptide added pricing 8.8 to 8.9.
- Audit · 3.32to3.30
Market prices recalculated on 9 November 2026 with Lyra Vital added: pricing 8.9 to 8.8.
- Audit · Initial audit
lab 0.4 / shipping 7.5 / pricing 8.9 / tenure 0.7 / transparency 4.5. First audit after the vendor's submission (reviewed 9 November 2026). 1 of 30 catalogue products has a certificate (Retatrutide, Freedom Diagnostics Testing, found at the laboratory); the other 29 count 0. Testing gate applies (cap 6.5, above the weighted score). Shipping policies contradict each other on the free-shipping threshold (rule B7, -0.5).
Editor’s notes
Sealed Peptides sells research peptides and lab supplies from sealedpeptides.com and ships within the United States from Michigan. The site names no company and no person. It gives a phone number and a mailing address in a Flint, Michigan shopping center, which it describes as mail only, with no storefront; its terms are dated October 2026 and name United States law. The domain was registered in September 2026. Of the 30 catalogue products we list, one has a posted certificate: Retatrutide 100mg, tested by Freedom Diagnostics Testing in November 2026 at 99.88% purity with identity by LC-MS, and found at the laboratory. The other 29 have none, and the site says a product not in its lab report library has no published report; four further products are listed as coming soon. The certificate includes no endotoxin or sterility result. All sales are final; damaged, wrong, defective and lost orders are replaced, with a 7-day window. The site states dispatch within 1 business day, tracking on all shipments, card payment through Square as well as Zelle, and published rates, though its payment page gives a different free-shipping threshold from the banner and the shipping policy. Seven product pages state no vial size in their text, and those products are not priced. In November 2026 prices sat well below the market median.
Sealed Peptides COAs and lab test results
One row per product: the certificate on file and how the lab rule reads it, the laboratory that issued it and its tier, the date it was tested, the purity it reports, and the lowest price per milligram we recorded (per IU or mL where a product is sold that way).
- Purity
- —
- Price per mg
- $1.80$89.99 / 50mg
- Purity
- —
- Price per mg
- $4.50$44.99 / 10mg
- Purity
- —
- Price per mg
- —
- Purity
- —
- Price per mg
- $8.50$84.99 / 10mg
- Purity
- —
- Price per mg
- $5.00$49.99 / 10mg
- Purity
- —
- Price per mg
- $7.00$34.99 / 5mg
- Purity
- —
- Price per mg
- $7.40$36.99 / 5mg
- Purity
- —
- Price per mg
- $0.45$44.99 / 100mg
- Purity
- —
- Price per mg
- $1.00$69.99 / 70mg
- Purity
- —
- Price per IU
- —
- Purity
- —
- Price per mg
- —
- Purity
- —
- Price per mg
- $5.00$49.99 / 10mg
- Purity
- —
- Price per mg
- $4.50$44.99 / 10mg
- Purity
- —
- Price per mg
- $1.00$79.99 / 80mg
- Purity
- —
- Price per mg
- $3.50$34.99 / 10mg
- Purity
- —
- Price per mg
- $1.62$64.99 / 40mg
- Purity
- —
- Price per mg
- $3.00$29.99 / 10mg
- Purity
- —
- Price per mg
- $3.60$35.99 / 10mg
- Purity
- —
- Price per mg
- $0.07$74.99 / 1000mgbest of 2 sizes
- Purity
- —
- Price per mg
- —
- Purity
- —
- Price per mg
- —
Freedom Diagnostics TestingTier Atested
- Purity
- 99.88%
- Price per mg
- $2.10$209.99 / 100mgbest of 4 sizes
- Purity
- —
- Price per mg
- $3.50$34.99 / 10mg
- Purity
- —
- Price per mg
- —
- Purity
- —
- Price per mg
- $6.00$59.99 / 10mg
- Purity
- —
- Price per mg
- $2.40$119.99 / 50mg
- Purity
- —
- Price per mg
- $6.00$29.99 / 5mg
- Purity
- —
- Price per mg
- —
- Purity
- —
- Price per mg
- $5.00$49.99 / 10mg
- Purity
- —
- Price per mg
- $1.42$169.99 / 120mgbest of 2 sizes
- Purity
- —
- Price per mL
- —
Learn more about what Sealed Peptides carries
Rated higher than Sealed Peptides, with a reader code
Sealed Peptides is not one of our affiliate partners, so we have no code for it. These partners score above it under the same published rules, pass our testing gate, and give readers a discount.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
6.18/10 · Fair · carries 27 of the same products
6.17/10 · Fair · carries 29 of the same products
5.96/10 · Fair · carries 27 of the same products
Sealed Peptides: Frequently Asked Questions
Is Sealed Peptides legit?
Sealed Peptides scores 3.33 out of 10 (Poor, #90 of 105) as of November 10, 2026 and does not meet our testing gate: 1 of the 30 products we score carries a certificate, 1 confirmed with the issuing lab (a lab we grade A). Its strongest area is pricing (9.0/10) and its weakest is lab testing (0.4/10); its operating history on record covers about two months.
Is there a Sealed Peptides promo code, coupon code, or discount code?
We do not have a verified Sealed Peptides promo code or coupon code right now. When Sealed Peptides runs a sale or issues a discount code, we post it here and on our promos page, so bookmark this page for the latest Sealed Peptides discount.
Does Sealed Peptides use third-party lab testing?
Not to our verification standard. Fewer than half of this vendor's scored products have a certificate from an independent laboratory in our directory (not tier D) whose verification key we confirmed at that laboratory, so the testing gate applies. This records what we could verify; it is not a finding of a quality or safety problem. Laboratories on the certificates we hold: Freedom Diagnostics Testing.
Where can I see Sealed Peptides' COAs?
In the "Sealed Peptides COAs and lab test results" table on this page. We hold 1 certificate for Sealed Peptides, covering 1 of the 31 products we track, issued by Freedom Diagnostics Testing. 1 product's certificate was confirmed at the issuing laboratory itself. Each row links the certificate, its lab, its test date and the purity it reports.
What peptides does Sealed Peptides carry?
Sealed Peptides carries 5-Amino-1MQ, BPC-157, BPC-157 + TB-500, Cagrilintide, CJC-1295 + Ipamorelin, CJC-1295, DSIP, GHK-Cu, and 23 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Sealed Peptides review on Peptide Source Review affected by affiliate status?
No. All affiliate relationships are publicly disclosed and never change a vendor's score, rank, or gate status. Our scoring formula is published in full and applied identically to every vendor.
Want to understand how this score was built?
Read the full methodology or the editorial integrity policy.
Sealed Peptides3.33Poor
1 confirmed at the lab