Supplier profile

Owsa Labs

Research peptide products, supplier information and the evidence behind the testing claims. Research-use products only.

Coverage: 23 products tracked

23tracked products

55/100average product score

9verified evidence records

8peptides covered

About the supplier

Company details come from the supplier’s own site and public company records.

Trading name: Owsa Labs
Legal company: Not disclosed
Company number: Not disclosed
Registered office: Not disclosed
Website: owsa-labs.com

Testing & transparency

Companies House verified: Not found
UK address disclosed: Not found
Contact details: Yes
Shipping policy: Yes
Returns policy: Yes
Batch / testing process explained: Yes

A supplier saying its products are tested is not the same as a published laboratory report for the exact vial. Each product page shows what evidence was actually found.

How we score research peptides →

Supplier score profile

Averages of tracked products, not a separate supplier rating. Products with a pending score are excluded, never counted as zero.

Testing & analytical evidence44/10023 of 23 products

Value for money67/10023 of 23 products

Product identity74/10023 of 23 products

Label & listing transparency100/10023 of 23 products

Tracked products (23)

UK catalogue

Products from Owsa Labs
Product	Quantity	Price / vial	Price / mg	Testing	Score
GHK-Cu 100-mg / owsa-ghk-100mgGHK-Cu	100 mg / vial	£23.99per vial	£0.24per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement We hold 2 laboratory reports for this compound. Each covers the lot it names, so check the lot number on your vial against the list below. Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch CU100/202602 Batch-specific report Recorded Report date 2026-02-16 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 38/45 Value 25/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 10-mg / owsa-rt-10mgRetatrutide	10 mg / vial	£29.49per vial	£2.95per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement "Certificate of analysis on every product"; "Third-party tested"; "Testing by Janoshik Analytical, covering peptide content and purity." Laboratory Janoshik Analytical Certification body Not recorded Batch RT10/202602 Batch-specific report Recorded Report date 2026-02-16 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 38/45 Value 21/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Ipamorelin 10-mg / owsa-ipa-10mgIpamorelin	10 mg / vial	£34.99per vial	£3.50per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement "Certificate of analysis on every product"; "We hold 1 laboratory report for this compound. It covers the lot it names, so check the lot number on your vial against the list below."; "Testing by Janoshik Analytical, covering peptide content and purity."; product page also states "≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}" purity. Laboratory Janoshik Analytical Certification body Not recorded Batch IP10/202608 Batch-specific report Recorded Report date 2026-08-11 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 39/45 Value 19/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
TB-500 (Thymosin Beta-4) 10-mg / owsa-tb5-10mgTB-500	10 mg / vial	£36.99per vial	£3.70per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement "Certificate of analysis on every product"; "Independent reports are published as we receive them"; "We hold 1 laboratory report for this compound"; "Testing by Janoshik Analytical, covering peptide content and purity." Laboratory Janoshik Analytical Certification body Not recorded Batch BT10/202602 Batch-specific report Recorded Report date 2026-02-16 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 38/45 Value 18/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
BPC-157 10-mg / owsa-bpc-10mgBPC-157	10 mg / vial	£29.99per vial	£3.00per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement Certificate of analysis on every product; We hold 1 laboratory report for this compound. It covers the lot it names, so check the lot number on your vial against the list below. LOT BC10/202608 10 mg 99.677{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5} Analysed April 14, 2025; Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch BC10/202608 Batch-specific report Recorded Report date 2026-08-11 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 37/45 Value 17/25 Product identity 12/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
GHK-Cu 50-mg / owsa-ghk-50mgGHK-Cu	50 mg / vial	£23.99per vial	£0.48per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement "Certificate of analysis on every product"; "We hold 2 laboratory reports for this compound. Each covers the lot it names"; "Testing by Janoshik Analytical, covering peptide content and purity."; product page also states "Purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}" and "high-purity lyophilised research peptide." Laboratory PeptideVerify Certification body Not recorded Batch ALPGC5003 Batch-specific report Recorded Report date 2026-06-16 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 35/45 Value 15/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 40-mg / owsa-rt-40mgRetatrutide	40 mg / vial	£89.99per vial	£2.25per mg	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of analysis on every product"; "Third-party COAs are published for selected lots"; "Testing by Janoshik Analytical, covering peptide content and purity." Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 25/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
CJC-1295 (no DAC) 10-mg / owsa-cjc-10mgCJC-1295	10 mg / vial	£36.99per vial	£3.70per mg	Testing evidence Evidence status Verified independent evidence Manufacturer statement Certificate of analysis on every product. CJC-1295 (no DAC) page says: “THIRD-PARTY TESTED” and “No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page.” The page also lists “Purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}.” Laboratory Janoshik Analytical Certification body Not recorded Batch CND10/202602 Batch-specific report Recorded Report date Not recorded Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 14/45 Value 18/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
BPC-157 5-mg / owsa-bpc-5mgBPC-157	5 mg / vial	£12.99per vial	£2.60per mg	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of analysis on every product"; "We hold 1 laboratory report for this compound. It covers the lot it names, so check the lot number on your vial against the list below."; "Testing by Janoshik Analytical, covering peptide content and purity." Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 19/25 Product identity 12/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
CJC-1295 (with DAC) — 5 mgCJC-1295	5 mg / vial	£29.99per vial	£6.00per mg	Testing evidence Evidence status Testing claimed Manufacturer statement Product page says 'THIRD-PARTY TESTED' and 'Purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}'; certificates page says 'No independent COA has been published for this lot yet.' Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 19/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 50-mg / owsa-rt-50mgRetatrutide	50 mg / vial	£179.99per vial	£3.60per mg	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of analysis on every product"; "Third-party COAs are published for selected lots"; "Testing by Janoshik Analytical, covering peptide content and purity." Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 19/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
CJC-1295 (no DAC) 5-mg / owsa-cjc-5mgCJC-1295	5 mg / vial	£22.99per vial	£4.60per mg	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of analysis on every product"; product page says "No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page." and shows "Purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}". Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 15/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 30-mg / owsa-rt-30mgRetatrutide	30 mg / vial	£139.99per vial	£4.67per mg	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of analysis on every product; Third-party COAs are published for selected lots; Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 15/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Ipamorelin 5-mg / owsa-ipa-5mgIpamorelin	5 mg / vial	£22.99per vial	£4.60per mg	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of analysis on every product; Ipamorelin – 10 mg — IP10/202608 — Janoshik Analytical — Verify at laboratory; Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 15/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
TB-500 (Thymosin Beta-4) 5-mg / owsa-tb5-5mgTB-500	5 mg / vial	£24.99per vial	£5.00per mg	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of Analysis on every product; TB-500 (Thymosin Beta-4) — high-purity lyophilised research peptide; purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}; We hold 1 laboratory report for this compound; Testing by Janoshik Analytical, covering peptide content and purity; LOT BT10/202602 covers 10 mg; 99.730{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}; analysed February 16, 2026. Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 14/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 5-mg / owsa-rt-5mgRetatrutide	5 mg / vial	£39.99per vial	£8.00per mg	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of analysis on every product"; "We hold 4 laboratory reports for this compound"; "Testing by Janoshik Analytical, covering peptide content and purity."; "Purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}" Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 7/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
KPV 10-mg / owsa-kpv-10mgKPV	10 mg / vial	£44.99per vial	£4.50per mg	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of Analysis No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page. BATCH DEMO-0068 LABORATORY Example Laboratory (placeholder) REPORT Not yet published Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 4/45 Value 12/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	Buy Now
Retatrutide 20-mg / owsa-rt-20mgRetatrutide	20 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Verified independent evidence Manufacturer statement Certificate of analysis on every product; Retatrutide – 20 mg / RT20/202602 listed on the Certificates of Analysis page; Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch RT20/202608 Batch-specific report Recorded Report date 2026-08-11 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 39/45 Value 23/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier
Retatrutide 60-mg / owsa-rt-60mgRetatrutide	60 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Verified independent evidence Manufacturer statement Certificate of analysis on every product; third-party COAs are published for selected lots; we publish Janoshik reports when we have them for the lot we ship. Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch RT60/202608 Batch-specific report Recorded Report date 2026-08-11 Evidence checked 2026-09-21 Certificate of analysis ↗	Why this score? Testing & analytical evidence 39/45 Value 20/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier
Tesamorelin 10-mg / owsa-tes-10mgTesamorelin	10 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of analysis on every product; 'THIRD-PARTY TESTED'; 'No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page.'; the product page also shows 'PURITY ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}'. Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 17/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier
Tesamorelin 5-mg / owsa-tes-5mgTesamorelin	5 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of analysis on every product; THIR D-PARTY TESTED; No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page. BATCH DEMO-0042 LABORATORY Example Laboratory (placeholder) REPORT Not yet published; product page purity ≥98{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5}. Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 13/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier
KPV 5-mg / owsa-kpv-5mgKPV	5 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Testing claimed Manufacturer statement "Certificate of Analysis on every product"; product page: "THIRD-PARTY TESTED" and "No independent COA has been published for this lot yet. We list published peptide reports on the Certificates of Analysis page."; testing page: "We commission testing from laboratories that publish their own reports" and describes identity by mass spectrometry and purity by HPLC in general. Laboratory Not recorded Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 12/45 Value 10/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier
Retatrutide 15-mg / owsa-rt-15mgRetatrutide	15 mg / vial	Out Of Stock	Out Of Stock	Testing evidence Evidence status Testing claimed Manufacturer statement Certificate of analysis on every product; Third-party COAs are published for selected lots; Testing by Janoshik Analytical, covering peptide content and purity. Laboratory Janoshik Analytical Certification body Not recorded Batch Not recorded Batch-specific report Not established in this record Report date Not recorded Evidence checked 2026-09-21	Why this score? Testing & analytical evidence 10/45 Value 10/25 Product identity 11/15 Supplier transparency 3/10 Label & listing transparency 5/5 Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.	View Supplier

Transparency summary

What the current records support, and where evidence is incomplete.

What we could verify

23 research peptide products tracked across 8 peptides.
9 product records have a verified independent laboratory report.
The supplier explains how batches are tested and traced.

What we could not verify

No registered company, company number or postal address was found on the supplier’s site.

Not confirmed does not mean it does not exist. A supplier’s own statements are distinct from independently verified testing.

Sources & last reviewed

Last reviewed: 21 Sep 2026

Supplier details are taken from the supplier’s own site and Companies House; product testing evidence keeps its recorded status.

Supplier website ↗