Reviewed by Jack Ryan, co-founder & editorial lead · Updated
COA practices 40%8/10
Reputation 20%6.5/10
Transparency 20%10/10
Operations 20%9/10
COA 40%; reputation, transparency and operations 20% each. Weighted result 8.3/10, rounded to 8.5/10.
COA evidenceCOA quality 8/10✓COA verified11 complete Janoshik Analytical reports cover identity, purity and measured content. All 11 match official laboratory records. None includes endotoxin, heavy-metals or sterility panels.Nine exact strengths; two GLP-3R reports omit nominal strength, and Semax 10 mg has no exact report.
Purity: 98.015%–99.890% across 11 complete current-stock reports; three separately disclosed rejected batches are outside this range.
11 issuer-matched, vendor-named reports; nine exact matches across 12 listed peptide strengths.
Yes. Pureline Biolabs publishes 11 complete Janoshik Analytical reports naming its UK company, all matched to official laboratory records. They cover identity, purity and measured content, with purity of 98.015%–99.890%. Nine of the 12 listed peptide strengths have an exact certificate. Its publication of three rejected batches and the measured content of current stock shows remarkable transparency. PeptidePrices rates it 8.5/10.
Evidence summary
Pureline Biolabs COAs and evidence
Pureline Biolabs earns 8.5/10 with 11 verified Janoshik Analytical reports, a registered UK company and remarkable transparency about rejected batches and measured vial content.
Nine of its 12 listed peptide strengths have exact certificates. All 11 retained reports cover identity, purity and content; the three separately disclosed rejected batches are not counted as complete reports or current-stock results.
01
COA archive and exact coverage
The library holds 11 complete one-page Janoshik Analytical reports, all naming Pureline Biolabs Ltd and matched to their specific official records. They were analysed July 29 and September 2, 2026 and cover identity, purity and measured content. No inspected report includes endotoxin, heavy-metals, sterility or other extended testing. Nine reports print exact current product strengths. The two GLP-3R reports omit nominal vial strength; the merchant labels their batches 10 mg and 20 mg. Semax 10 mg has no exact report.
02
Purity and measured content
Numerical purity is 98.015%–99.890% across the 11 complete current-stock reports. Ten single-peptide reports measured 81.3%–135.1% of the merchant-labelled mass: Melanotan I 8.13 mg against 10 mg, GLP-3R 18.36 mg against 20 mg and 13.51 mg against 10 mg. The GHK-Cu report gives 52.64 mg total, comprising 43.66 mg GHK and 8.98 mg copper; its components are not separate assays. The vendor-hosted GLP-3R task 226521 image truncates the batch to PLB-00; Janoshik’s current record gives PLB-003, with the same compound and results.
03
Rejected batches
Pureline shows remarkable transparency in its October 21 batch-testing article. It describes three batches rejected before sale: GLP-3R with no GLP-1 peptide detected, Tesamorelin at 94.886% and TB-500 at 97.857%. It also publishes the underfilled and overfilled results from current stock. The three rejected batches have verifier keys but no task numbers or complete files in the article; these vendor-disclosed results remain separate from the 11 complete verified reports and the current products.
04
Reviews
Pureline Biolabs has an independent laboratory record under its own company name, with all 11 retained Janoshik reports matched to official records. The Peptide Watch also lists those reports. No independently hosted customer-review count was established in the October 22 review; the exact-domain Trustpilot profile displayed “This profile has been removed.” The available reputation evidence is the attributable laboratory record and third-party certificate coverage; customer purchase feedback remains unquantified.
05
Company and people
Companies House records active PURELINEBIOLABS LTD, company 17236739, incorporated May 22, 2026. Its officer record names Daniel Jarvis as director. The about page describes Chris and Daniel as the father-and-son team; articles are signed Chris Harris. The domain was registered May 9, 2026, before the retained reports. The store publishes a telephone, domain-based email, WhatsApp and policy pages. Its 128 City Road, London address is the registered office for correspondence; the merchant states that stock is held separately. Its batch-testing disclosure shows remarkable transparency: it names three batches rejected before sale and publishes measured content even when it falls below or above the vial label. Those rejected batches remain separate from the 11 complete verified reports.
06
Shipping, payment and returns
The shipping policy lists Royal Mail standard delivery at £3.99 and Special Delivery at £6.99, with weekday dispatch before 2 PM and a signature required. Delivery is limited to the UK; the main policy says mainland addresses. The October 22 checkout offers Fena Pay by Bank, with the United Kingdom as its only delivery-country option. An Ipamorelin 5 mg vial at £19.99 plus £3.99 flat-rate shipping totals £23.98; £6.99 next-day delivery is the alternative. Returns exclude opened products; damage claims require photos within 24 hours, wrong items within 48 hours, and accepted sealed returns may incur a 15% restocking fee. A current dispatch notice says orders placed after 2 PM on Friday October 23 will dispatch Thursday October 29.
07
Storage and dispatch
The cold-chain log publishes storage readings and names the refrigerator and monitor. Its latest listed check is September 29, 2026. The page contains inconsistent descriptions of when continuous monitoring began, while saying interval exports are not available. Insulated packaging and refrigerant packs are merchant-stated; the shipping policy says transit temperature validation is still in progress.
Details
Payment methods
Fena Pay by Bank
Shipping
UK-only checkout.
Flat Rate £3.99; Next Day Delivery £6.99.
Weekday dispatch before 2 PM; signature required.
Orders after 2 PM October 23 dispatch October 29, 2026.
Reviews
No PeptidePrices reader reviews yet.
Independent external review aggregate not established yet.
Top 5 of 19 vendors that reached the cheapest five
Frequently asked questions
Is Pureline Biolabs legit?
Yes. Pureline Biolabs publishes 11 complete Janoshik Analytical reports naming its UK company, all matched to official laboratory records. They cover identity, purity and measured content, with purity of 98.015%–99.890%. Nine of the 12 listed peptide strengths have an exact certificate. Its publication of three rejected batches and the measured content of current stock shows remarkable transparency. PeptidePrices rates it 8.5/10. Pureline Biolabs scores 8.5/10 on PeptidePrices' evidence rubric: 40% COA practices, 20% community reputation, 20% transparency, and 20% operations. Affiliate relationships are disclosed on this page and are not a scoring factor.
Where does Pureline Biolabs ship?
Pureline Biolabs ships to United Kingdom (mainland per main policy). UK-only checkout. Flat Rate £3.99; Next Day Delivery £6.99. Weekday dispatch before 2 PM; signature required. Orders after 2 PM October 23 dispatch October 29, 2026.
Does Pureline Biolabs publish COAs?
COA verified. 11 issuer-matched, vendor-named reports; nine exact matches across 12 listed peptide strengths.
What do customer reviews say about Pureline Biolabs?
PeptidePrices could not verify a mature independent review aggregate for Pureline Biolabs. The evidence summary on this page records what we could and could not verify.
Yes. The library contains 11 complete vendor-named Janoshik Analytical reports, all matched to official laboratory records. Nine report exact current product strengths. All cover identity, purity and measured content; no extended panels are printed.
What is the Pureline Biolabs discount code?
No PeptidePrices customer coupon is currently listed for Pureline Biolabs.
Where does Pureline Biolabs deliver?
Its shipping policy lists UK delivery, with £3.99 standard and £6.99 Special Delivery. A signature is required; the main policy specifies mainland addresses.
