Independent review · verified 25 October 2026 · non-partner
PL
Peak Lab Peptides Review (2026)
Legit, with caveats. The rest: Peak Lab Peptides LLC is named in the terms, with Watertown, SD 57201 and a phone number but no street address. The About page says 'accredited laboratories'; Bioviridian does not claim accreditation. Semaglutide, tirzepatide and retatrutide sell as 'GLP-1 S', 'GLP-1 T' and 'GLP-3', named only on the COA page. Prices are open and every line is shown at about 20% off a struck list price, so the sale price is the real price. Five of ten.
Evidence rubric
Legit, with caveats
Trustpilot: profile removed
Lab:Bioviridian (on certificates) · verifiable at the lab
We earn nothing from Peak Lab Peptides.Top-scored partner: Purgo Labs 10/1020% off every order with
Same vial, both prices: BPC-157 10 mg is $35.99 at Purgo with the code vs $54.40 at Peak Lab Peptides (product pages, read 2 Oct / 25 Oct)
Research use only · not medical advice · we score documentation, never use or dosing · details·Peak Lab Peptides is not a partner; Purgo Labs is, and the score does not read partner status·How we score
00
Peak Lab Peptides at a glance
every number read on the date shown · is it legit? ·
MyPurePeptide is 54% cheaper per milligram than Peak Lab Peptides on this read. Per-milligram price is list price over labelled milligrams; it says nothing about what is in the vial. Code prices are list × (1 − the code's stated discount), not cart-tested against sales. We earn a commission on partner links; the rubric does not read partner status.
01
5 of 10 checks passed
Read 25 October 2026
Names its lab
Bioviridian (College Station, TX) printed on all 48 reports on the public COA page and on the two certificates we opened (BPC-157 COA6663, retatrutide COA6671) — read 25 Oct 2026
COAs verifiable at lab
Bioviridian's own site served COA6663 and COA6671 as PDFs from bioviridians.com/coas/ when we entered the codes on its COA search on 25 Oct 2026; the content, purity and dates match the vendor's copies (the lot fields do not — see claims-consistent)
Per-lot certificates
Not awarded. How to check: Certificates carry lot numbers that match shipped vials, not one generic PDF.
Measured net content
Lab copy of COA6663 reports 10.65 mg on a 10 mg BPC-157 label (106.5%), purity 99.7%; COA6671 reports 10.38 mg on a 10 mg retatrutide label, 99.7% — read at the lab on 25 Oct 2026
Prices & COAs ungated
Catalog, prices and the COA page readable without an account; prices read from the public Store API (25 Oct 2026)
Independent reviews (50+)
Not awarded. How to check: Check the vendor on Trustpilot or an equivalent platform the vendor cannot edit.
Claims consistent
Not awarded. How to check: Compare testing/lab statements across the vendor's own pages.
Sizes with prices
Every listing states milligrams with its price (BPC-157 5mg $33.40 / 10mg $54.40; TB-500 10mg $54.00; 'GLP-3' 10mg $95.00; NAD+ 500mg $56.00), read 25 Oct 2026
Legal entity & address
Not awarded. How to check: The company's registered name (LLC, Inc., s.r.o. …) and a street address appear on the vendor's own Contact, About or Terms pages — not only a brand name, a city, or hidden page markup.
Clean record
Not awarded. How to check: Compare any on-site review score or badge with the independent platform; check whether the vendor only takes, or pushes you toward, payment rails you cannot dispute; check FDA and BBB records. Awarded unless one of these is on record.
One point per criterion, no weighting, same rubric for every vendor — scoreboard.
What Peak Lab Peptides leaves open, Purgo Labs has on record
A registered company and street address, an independent review record, a disputable payment path and consistent claims across its own pages: Purgo Labs passes all 4 (10/10, Trustpilot 4.8). Codefor 20% off every order.
Same vial, both prices: BPC-157 10 mg is $35.99 at Purgo with the code vs $54.40 at Peak Lab Peptides.
Just want to know whether it is safe to order from? The trust checks — company identity, lab lookup, payment rail, what we flagged — are on Is Peak Lab Peptides legit?
02
Peak Lab Peptides complaints: what the record shows
Written for this vendor; the sections below are computed
If you searched "peak lab peptides reviews", start with the two review records that exist. Trustpilot has removed the peaklabpeptides.com profile for breaching its guidelines; on 25 October 2026 the page says so. The 4.9 across 516 'Researcher Reviews' in the site header comes from WiserReview, a review app the store installs and manages itself, so it is not a record the vendor cannot edit. We read it; the visible reviews are short and positive. Finnrick lists the vendor with no completed tests.
The certificates are the strong part, with one real problem. The COA page lists 48 Bioviridian reports and we opened two. Bioviridian's own site served both PDFs when we entered the codes: BPC-157 COA6663 measures 10.65 mg on a 10 mg label at 99.7% purity, and retatrutide COA6671 measures 10.38 mg at 99.7%. The content, purity, dates and vendor name match the vendor's copies. The lot numbers do not. The lab's BPC-157 copy says 'NA' where the vendor's says BC-202607-001, and the lab's retatrutide copy says RT-202602-001 where the vendor's says RT-202607-001, with a vial photo added. This sits under a COA page that says every report is 'published exactly as received — no modifications'. The glutathione entry is coded 202701, a month that has not arrived. Whoever made the edits, a buyer cannot match the lot on a vial to the lab's record.
The rest: Peak Lab Peptides LLC is named in the terms, with Watertown, SD 57201 and a phone number but no street address. The About page says 'accredited laboratories'; Bioviridian does not claim accreditation. Semaglutide, tirzepatide and retatrutide sell as 'GLP-1 S', 'GLP-1 T' and 'GLP-3', named only on the COA page. Prices are open and every line is shown at about 20% off a struck list price, so the sale price is the real price. Five of ten. If you want certificates whose lot numbers match the lab's record and a review base you can read, Purgo Labs is the 10/10 option on the same rubric.
03
What checks out, and what doesn't
Every line links to what we read on 25 October 2026
Evidence ledger · read 25 October 2026
5 verified2 contradictions1 flag4 could not verify
Verified — what we opened, with the date
VerifiedBioviridian (College Station
TX) printed on all 48 reports on the public COA page and on the two certificates we opened (BPC-157 COA6663, retatrutide COA6671) — read 25 Oct 2026
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VerifiedBioviridian's own site served COA6663 and COA6671 as PDFs from bioviridians.com/coas/ when we entered the codes on its COA search on 25 Oct 2026; the content, purity and dates match the vendor's copies (the lot fields do not — see claims-consistent)
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VerifiedLab copy of COA6663 reports 10.65 mg on a 10 mg BPC-157 label (106.5%), purity 99.7%
COA6671 reports 10.38 mg on a 10 mg retatrutide label, 99.7% — read at the lab on 25 Oct 2026
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VerifiedCatalog, prices and the COA page readable without an account
prices read from the public Store API (25 Oct 2026)
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VerifiedEvery listing states milligrams with its price (BPC-157 5mg $33.40 / 10mg $54.40
Contradiction — the vendor's claims disagree with each other or with the evidence
ContradictionCOA page
every report is 'published exactly as received — no cherry-picking, no modifications'. The lab's copies of COA6663 and COA6671 carry different lot numbers from the vendor's copies, and the vendor's retatrutide copy adds a vial photo.
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ContradictionAbout page
'tested by accredited laboratories'. Bioviridian's site makes no accreditation claim.
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Flag — read before ordering
FlagTrustpilot has removed the peaklabpeptides.com profile
('goes against our guidelines', read 25 Oct 2026), while the site header shows a 4.9 rating across 516 'Researcher Reviews' from WiserReview, a review app the vendor installs and manages. The COA page says every report is 'published exactly as received — no cherry-picking, no modifications', but on the two certificates we compared, the lot number on the vendor's copy differs from the lab's copy (NA and RT-202602-001 at the lab; BC-202607-001 and RT-202607-001 on the site), and the glutathione entry is coded 202701, a month that has not happened. The About page says 'accredited laboratories'; Bioviridian claims no accreditation. No street address: the contact page gives Watertown, SD 57201 and a phone. Semaglutide, tirzepatide and retatrutide are sold as 'GLP-1 S', 'GLP-1 T' and 'GLP-3', with the compound named only on the COA page. Finnrick has no completed tests. Payment rails not examined.
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Could not verify — not on the record either way
Could not verifyWhy the lot numbers differ between the lab's copies and the vendor's
Bioviridian's PDF for COA6663 reads 'NA' and for COA6671 reads 'RT-202602-001'; the vendor's copies read BC-202607-001 and RT-202607-001. We can see the discrepancy, not who made it or why (25 Oct 2026).
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Could not verifyAn independent review record
Trustpilot has removed the profile. The 516 on-site reviews are served by WiserReview, an app the vendor installs. Finnrick has no completed tests.
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Could not verifyA street address
the contact page gives Watertown, SD 57201 and a phone number only.
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Could not verifyPayment rails
not examined.
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Peak Lab Peptides LLC, a South Dakota limited liability company, named in the terms (effective 1 Oct 2025, updated 30 Sep 2026). Contact page: Watertown, South Dakota 57201, 605-524-2800, support@peaklabpeptides.com. No street address on any page we read (25 Oct 2026).
Check it yourself: Bioviridian Inc. (College Station, TX) hosts certificates at bioviridians.com/coas/COA<number>.pdf and runs a COA search on its site; the certificate prints a verification code (e.g. COA5346). No accreditation claimed (24 Oct 2026). The button above opens the lab's lookup.
Sample received 16 Jul, issued 23 Jul 2026. The lab's PDF (bioviridians.com/coas/COA6663.pdf) and the vendor's image agree on content, purity, dates and vendor name; the lab's lot field reads NA, the vendor's reads BC-202607-001.
Other certificates we opened at Peak Lab Peptides: 1
2 verifiable at the lab2 state measured massmedian purity 99.70%median fill 105.1% of labellast read 2026-10-25
Product · lot
Lab
Purity
Measured vs label
Verify
Flags
Retatrutide 10mglot RT-202602-001 at the lab; RT-202607-001 on the vendor's copy · tested 23 Jul 2026
Each row is a certificate we opened and read ourselves; "verify at the lab" goes to the laboratory's own lookup, never a copy we host. Full COA library →
Where Peak Lab Peptides ranks by compound
Peak Lab Peptides appears in 12 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
Threads read via search on 25 October 2026 · not scored
Nothing from buyers. The only Reddit account in the results is the vendor's own, u/peak-lab, posting a 10% code. The remaining results are generic 'how do you judge a peptide site' threads and SEO pages that mention the name. No first-person orders, no complaints, no tests.
A generic vendor-vetting thread that surfaces for the search; the vendor is mentioned in passing, not reviewed.
How this was read: Google's Reddit results for "Peak Lab Peptides reddit" on 25 October 2026 — thread titles, subreddit, dates and the text visible in search. We did not read every comment, so a gist says what a thread is and what its visible text says, not what it concludes. Threads in a vendor-run or ranking-site subreddit, and listicles or coupon posts in unrelated subreddits, are labelled as such. None of this is an input to the score; the rubric reads evidence, not opinions.
Affiliate partner; we earn a commission on Purgo orders. We earn nothing from Peak Lab Peptides. Scores are computed from published evidence and do not read partner status.
Second verified option · 10/10
MyPurePeptide — cheaper than Purgo after both codes on 16 of 18 like-for-like vials; cheaper than Peak Lab Peptides on 8 of 8; 12 compounds Peak Lab Peptides doesn't price.
Picked by rule: highest-scored code partner other than Purgo, tie with Peptide Giants broken on list price (13 of 14 shared vials cheaper). Affiliate; we earn a commission. Code terms.
It is a real, trading South Dakota LLC whose Bioviridian certificates resolve on the lab's own site, and the two we checked show full content (10.65 mg and 10.38 mg on 10 mg labels). It scores 5/10 because the lot numbers on its copies differ from the lab's copies, Trustpilot has removed its profile, the 4.9 header badge comes from a vendor-installed app, it publishes no street address, and it describes its lab as accredited when the lab makes no such claim. The full scam check is on our Is Peak Lab Peptides legit page.
Do Peak Lab Peptides COAs check out at the lab?
Partly. On 25 October 2026 Bioviridian's COA search served PDFs for COA6663 (BPC-157) and COA6671 (retatrutide), and the measured content, purity, dates and vendor name matched the vendor's copies. The lot numbers did not: NA and RT-202602-001 at the lab versus BC-202607-001 and RT-202607-001 on the vendor's site. You can run the check yourself at bioviridians.com/coa-search.html with the code printed on any certificate.
Why does Peak Lab Peptides have no Trustpilot page?
Trustpilot removed the peaklabpeptides.com profile because it 'goes against our guidelines' (read 25 October 2026). Trustpilot does not publish the reason for a specific removal. The 4.9/516 figure on the vendor's site is from WiserReview, an app the vendor installs, not from Trustpilot.
What do Peak Lab Peptides customers complain about?
With the Trustpilot record gone, the only visible reviews are the vendor-hosted ones, which are positive and short. Reddit shows no user threads about the vendor; the only account is the vendor's own, posting a 10% code. The record is therefore too thin to name a complaint pattern. Our own findings are the lot-number discrepancy, the missing street address and the coded GLP names.
Does Peak Lab Peptides sell semaglutide, tirzepatide and retatrutide?
Yes, as 'GLP-1 S', 'GLP-1 T' and 'GLP-3', in 5 mg to 60 mg vials. The compound names appear on the COA page (Semaglutide, Tirzepatide, Retatrutide), and the lab's copy of COA6671 is titled 'Retatrutide 10mg'. On 25 October 2026 'GLP-3' 10 mg was $95.00 and 'GLP-1 T' 10 mg was $74.40, both shown as sale prices.
Peak Lab Peptides vs Purgo Labs: which should I choose?
Purgo Labs scores 10/10 on the same rubric: certificates checkable at the lab with lot numbers that match, a published company name and address, and an active Trustpilot record; code HEALTH takes 20% off. Peak Lab Peptides has lab-checked content but mismatched lot numbers, no independent review record and no street address. Purgo Labs is an affiliate partner of ours; Peak Lab Peptides is not.
How does Peak Lab Peptides score on the verification rubric?
As of 25 October 2026, Peak Lab Peptides scores 5/10 on our verification rubric and has Trustpilot profile removed. The trust assessment — who runs it, whether a certificate can be checked with the lab, the payment rail, and what we flagged — is on our "Is Peak Lab Peptides legit?" page at /guides/is-peak-lab-peptides-legit.
Does Peak Lab Peptides publish third-party COAs?
Read 25 October 2026, logged out. A 114-product WooCommerce catalog (88 single items, the rest 10-vial kits) with open prices, every line shown at roughly 20% off a struck list price: BPC-157 5mg $33.40, 10mg $54.40; TB-500 5mg $38.00, 10mg $54.00; 'GLP-1 S' 10mg $66.80; 'GLP-1 T' 10mg $74.40; 'GLP-3' 10mg $95.00; NAD+ 500mg $56.00; GHK-Cu 50mg $35.30; MOTS-c 10mg $40.00. A public COA page lists 48 Bioviridian reports. We opened the BPC-157 report (COA6663, received 16 Jul, issued 23 Jul 2026: 10.65 mg on a 10 mg label, purity 99.7%) and the retatrutide report (COA6671, same dates: 10.38 mg on 10 mg, 99.7%), and Bioviridian's own site served both PDFs for those codes. On the lab's copies the lot field reads 'NA' (BPC-157) and 'RT-202602-001' (retatrutide); the vendor's copies read 'BC-202607-001' and 'RT-202607-001', and the vendor's retatrutide copy carries a vial photo the lab's does not. Terms name Peak Lab Peptides LLC, a South Dakota company; the contact page gives Watertown, SD 57201 and a phone number but no street address.
What should buyers watch for with Peak Lab Peptides?
Trustpilot has removed the peaklabpeptides.com profile ('goes against our guidelines', read 25 Oct 2026), while the site header shows a 4.9 rating across 516 'Researcher Reviews' from WiserReview, a review app the vendor installs and manages. The COA page says every report is 'published exactly as received — no cherry-picking, no modifications', but on the two certificates we compared, the lot number on the vendor's copy differs from the lab's copy (NA and RT-202602-001 at the lab; BC-202607-001 and RT-202607-001 on the site), and the glutathione entry is coded 202701, a month that has not happened. The About page says 'accredited laboratories'; Bioviridian claims no accreditation. No street address: the contact page gives Watertown, SD 57201 and a phone. Semaglutide, tirzepatide and retatrutide are sold as 'GLP-1 S', 'GLP-1 T' and 'GLP-3', with the compound named only on the COA page. Finnrick has no completed tests. Payment rails not examined.
What does Reddit say about Peak Lab Peptides?
Nothing from buyers. The only Reddit account in the results is the vendor's own, u/peak-lab, posting a 10% code. The remaining results are generic 'how do you judge a peptide site' threads and SEO pages that mention the name. No first-person orders, no complaints, no tests. Threads read via search on 25 October 2026; none of it is an input to the score.
Who runs Peak Lab Peptides, and where is it located?
Peak Lab Peptides LLC, a South Dakota limited liability company, named in the terms (effective 1 Oct 2025, updated 30 Sep 2026). Contact page: Watertown, South Dakota 57201, 605-524-2800, support@peaklabpeptides.com. No street address on any page we read (25 Oct 2026). (read 25 October 2026 from the vendor's own pages).
Which lab tests Peak Lab Peptides' products?
Peak Lab Peptides names Bioviridian (on certificates). Certificates resolve on the lab's own system, so a report can be checked with the lab rather than only downloaded from the vendor. The certificate we opened, with lot, measured content and the lab lookup, is in the certificates section of this page (read 25 October 2026).
Peak Lab Peptides vs Purgo Labs — which is better?
On our published rubric Peak Lab Peptides scores 5/10 and Purgo Labs 10/10. Purgo Labs is our affiliate partner and Peak Lab Peptides is not; the comparison module on this page shows the criteria each earns and the same vial at both prices, computed from the same dated data.
How much is BPC-157 at Peak Lab Peptides?
5mg was $16.70 per vial ($33.40 for two) on 25 October 2026 (sale; list $41.00 struck). Prices move; we record what we saw and when.
