Janoshik Analytical — independent testing lab
HPLC & Mass Spectrometry methods
98–99% purity across all compounds
New batch COA with every restock

All COAs below are verified by Janoshik Analytical, an independent third-party laboratory. Each document includes the compound name, batch ID, test date, method, and purity result. Learn more about Janoshik →

A note on transparency: The certificates currently displayed were provided by our manufacturer and submitted to Janoshik for independent verification. We are actively in the process of commissioning our own Janoshik tests under the Cove Compounds label for every compound we carry. As each new COA is issued, it will replace the existing one here. We believe you deserve to know exactly what you're purchasing — that commitment drives every testing decision we make.

Metabolic & Endocrine
GLP-3 RT
10 mg vial
≥99%
TesterJanoshik
TestedFeb 2026
GLP-3 RT
20 mg vial
≥99%
TesterJanoshik
TestedFeb 2026
GLP-3 RT
30 mg vial
≥99%
TesterJanoshik
TestedFeb 2026
GLP-2 TZ
15 mg vial
≥99%
TesterJanoshik
Tested2025
GLP-2 TZ
20 mg vial
≥99%
TesterJanoshik
Tested2025
GLP-2 TZ
30 mg vial
≥99%
TesterJanoshik
TestedDec 2025
GLP-2 TZ
40 mg vial
≥99%
TesterJanoshik
TestedDec 2025
GLP-2 TZ
60 mg vial
≥99%
TesterJanoshik
TestedDec 2025
Tesamorelin
10 mg vials
≥96%
TesterJanoshik
Tested2025
HCG
7,500 IU vials
Verified
TesterJanoshik
TestedMar 2026
Recovery
Wolverine Blend
BPC-157 5 mg + TB-500 5 mg
≥96%
TesterJanoshik
Tested2025
Skin & Collagen
GHK-Cu
50 mg & 100 mg vials
≥99%
TesterJanoshik
TestedFeb 2026
Longevity
NAD+
500 mg & 1,000 mg vials
≥99%
TesterJanoshik
Tested2025
Glutathione
750 mg vials
≥96%
TesterJanoshik
BatchAU-2025-008
Coming Soon
MOTS-C
10 mg vials
≥96%
TesterJanoshik
Tested2025
SS-31
10 mg vials
≥99%
TesterJanoshik
Tested2025
GH Secretagogues
CJC No DAC + Ipamorelin
5 mg + 5 mg blend vials
≥96%
TesterJanoshik
Tested2025
Ipamorelin
5 mg & 10 mg vials
≥96%
TesterJanoshik
BatchAU-2025-011
Coming Soon
Nootropics
Semax
5 mg vials
≥99%
TesterJanoshik
BatchAU-2025-012
Coming Soon
Selank
5 mg vials
≥99%
TesterJanoshik
Tested2025
Tanning & Aesthetics
Melanotan-2
10 mg vials
≥99%
TesterJanoshik
Tested2025
Our Testing Partner

Janoshik Analytical

Independent analytical chemistry laboratory specializing in peptide purity testing via HPLC and mass spectrometry. All Cove Compounds compounds are submitted to Janoshik for verification with every production batch. Results are publicly verifiable by order number.

janoshik.com →
Shop All