GLP-1/GIP dual class listings: public certificates of analysis
25 public certificates for GLP-1/GIP dual class listings from 14 suppliers, opened without an account and recorded with lot, laboratory, date, purity and method. 10 more suppliers list GLP-1/GIP dual class listings without a certificate we could open for it.
The issuing laboratories are Janoshik (5), Bioviridian (4), Kovera Labs (3), Vanguard Laboratory (3), Accumark Labs (2), Freedom Diagnostics (1) and MZ Biolabs (1); 6 documents name no laboratory. Methods printed: HPLC+MS, HPLC. Reported purity runs from 99.547% to 99.91% on the 9 documents that state one. Dates run from 2023-08-11 to 2026-10-16. We index what the supplier publishes; we do not verify documents with the laboratory. How to read a certificate · Lot-level vs sample testing.
Suppliers with a public GLP-1/GIP dual class listings certificate
| Supplier | Score | Certificates | With lot | Laboratories | Newest | |
|---|---|---|---|---|---|---|
 Paramount Peptides | 76/100 | 5 | 5 | Accumark Labs, Janoshik | 2026-06-28 | Register |
 Loti Labs | 58/100 | 3 | 3 | Bioviridian | 2026-08-01 | Register |
 Geo Peptides | 48/100 | 3 | 0 | Not named | — | Register |
 Licensed Peptides | 84/100 | 2 | 2 | Vanguard Laboratory | — | Register |
 Alpha Peptides | 71/100 | 2 | 1 | Not named | — | Register |
 Eternal Peptides | 22/100 | 2 | 0 | Kovera Labs | — | Register |
 Pure Peptide Labs | 74/100 | 1 | 1 | Kovera Labs | 2026-10-01 | Register |
 Peptide Perfection | 72/100 | 1 | 1 | Vanguard Laboratory | 2026-05-05 | Register |
 Evolve Peptides | 70/100 | 1 | 1 | Janoshik | 2024-10-21 | Register |
| Alpha Labs Peptides | 68/100 | 1 | 0 | Not named | 2026-09-26 | Register |
| Peptide Pros | 63/100 | 1 | 1 | MZ Biolabs | 2023-08-11 | Register |
 Peptide Warehouse | 61/100 | 1 | 1 | Freedom Diagnostics | 2026-10-16 | Register |
| Prime Peptides | 59/100 | 1 | 1 | Bioviridian | 2026-04-24 | Register |
 Atomik Labz | 39/100 | 1 | 1 | Janoshik | 2026-02-02 | Register |
All 25 certificates
| Supplier | Product | Lot | Laboratory | Date | Purity | Method | Type | |
|---|---|---|---|---|---|---|---|---|
| Peptide Warehouse | GLP-2 (T) 10mg | Accession 2610140075 | Freedom Diagnostics | 2026-10-16 | 99.91% | HPLC+MS | Open | |
| Pure Peptide Labs | GLP-2 TZ | TZ5318 | Kovera Labs | 2026-10-01 | 99.547% | — | Open | |
| Alpha Labs Peptides | AL-TRZ (100mg) | — | Not named | 2026-09-26 | — | — | image | Open |
| Loti Labs | Tirzepatide 30mg | LL-TZ30-726 | Bioviridian | 2026-08-01 | 99.86% | — | Open | |
| Loti Labs | Tirzepatide 50mg | LL-TZ50-726 | Bioviridian | 2026-08-01 | 99.86% | — | Open | |
| Loti Labs | Tirzepatide 10mg | LL-TZ10-726 | Bioviridian | 2026-07-27 | 99.78% | — | Open | |
| Paramount Peptides | GLP-2 T 60mg | DR60N061026 | Accumark Labs | 2026-06-28 | — | — | image | Open |
| Paramount Peptides | GLP-2 T 75mg | DR75N060326 | Accumark Labs | 2026-06-23 | — | — | image | Open |
| Peptide Perfection | GLP2-T 10 mg Pen (current pen) | White Cap | Vanguard Laboratory | 2026-05-05 | 99.8% | HPLC | image | Open |
| Prime Peptides | Tirzepatide 10 mg | 3122026TR | Bioviridian | 2026-04-24 | 99.8% | HPLC | Open | |
| Paramount Peptides | GLP-2 T 30mg | DR30N031826 | Janoshik | 2026-04-18 | — | — | image | Open |
| Atomik Labz | Peptide 2 (T) – 10mg | TIRZ100121 | Janoshik | 2026-02-02 | 99.862% | — | image | Open |
| Paramount Peptides | GLP-2 T 120mg | TRIM 120N011726 | Janoshik | 2026-02-02 | — | — | image | Open |
| Paramount Peptides | GLP-2 T 40mg | T40N111825 | Janoshik | 2025-11-28 | — | — | image | Open |
| Evolve Peptides | Tirz. 10 mg | 51009 | Janoshik | 2024-10-21 | — | — | page | Open |
| Peptide Pros | Tirzepatide 5mg | 2023-08-08 | MZ Biolabs | 2023-08-11 | 99.9% | HPLC+MS | Open | |
| Alpha Peptides | GLP-2 TZ 30mg | — | Not named | — | — | — | Open | |
| Alpha Peptides | GLP-2 TZ 60mg | T60-42326428 | Not named | — | — | — | page | Open |
| Geo Peptides | Tirzepatide 10mg | — | Not named | — | — | — | image | Open |
| Geo Peptides | Tirzepatide 20mg | — | Not named | — | — | — | image | Open |
| Geo Peptides | Tirzepatide 30mg | — | Not named | — | — | — | image | Open |
| Eternal Peptides | EP-2 (T) 5mg | — | Kovera Labs | — | — | — | page | Open |
| Eternal Peptides | EP-2 (T) 10mg | — | Kovera Labs | — | — | — | page | Open |
| Licensed Peptides | LP2-T 10mg | V260423-7 | Vanguard Laboratory | — | — | HPLC | image | Open |
| Licensed Peptides | LP2-T 5mg | V260123-1 | Vanguard Laboratory | — | — | HPLC | image | Open |
Laboratory coverage for GLP-1/GIP dual class listings
Prices and the peptide page
The GLP-1/GIP dual class listings page lists every supplier and listing with price per milligram; size comparisons: 5 mg (9 suppliers, median $53.99) · 10 mg (16 suppliers, median $89.48) · 20 mg (8 suppliers, median $95.98) · 30 mg (14 suppliers, median $150) · 60 mg (12 suppliers, median $262). COA database · Laboratories · Lot lookup.
Frequently asked questions
Which suppliers publish a certificate of analysis for GLP-1/GIP dual class listings?
14 suppliers in our index publish at least one public certificate for GLP-1/GIP dual class listings: Paramount Peptides (5), Loti Labs (3), Geo Peptides (3), Licensed Peptides (2), Alpha Peptides (2), Eternal Peptides (2), Pure Peptide Labs (1), Peptide Perfection (1) and others listed in the table. 10 further suppliers list GLP-1/GIP dual class listings without a certificate we could open for it.
Which laboratories test GLP-1/GIP dual class listings for these suppliers?
Janoshik (5 certificates, 3 suppliers); Bioviridian (4 certificates, 2 suppliers); Kovera Labs (3 certificates, 2 suppliers); Vanguard Laboratory (3 certificates, 2 suppliers); Accumark Labs (2 certificates, 1 supplier); Freedom Diagnostics (1 certificate, 1 supplier); MZ Biolabs (1 certificate, 1 supplier). 6 documents name no laboratory.
Are the GLP-1/GIP dual class listings certificates lot-specific?
18 of the 25 certificates print a lot number, and the dates printed run from 2023-08-11 to 2026-10-16. A certificate without a lot number describes a sample, not the vial you receive; match the lot on the document to the label.
All listed materials are for laboratory research use only. A certificate describes the sample the laboratory received. Download the register (CSV) · Request a correction.