01
What is a COA?
A Certificate of Analysis is a laboratory document linked to a specific batch. It records the sample details, test method and reported result.
Documentation made clear
Quality & Verification
A Certificate of Analysis helps you understand what was tested, how it was tested and which batch the result applies to. Here is a plain-language guide to the documentation available from Sempra Labs.
02
What does purity mean?
HPLC or LC-UV separates a sample into its components and estimates how much of the detected material corresponds to the main compound.
03
Purity vs identity
Purity estimates the proportion of a material. Identity testing, such as high-resolution mass spectrometry, checks whether its molecular signature matches the expected compound.
Our testing
Clear claims, specific to the relevant batch.
Retatrutide
Selected batches
ADKL Labs · Australia August 2026 >99% purity by LC-UV Identity confirmed by Hi-Res MS
COA by emailAll other products
Batch documentation
Janoshik Certificate of Analysis available by email. Contact us with the product name and batch number so we can provide the relevant record.
COA by emailThe Australian ADKL Labs result stated above relates to Retatrutide only. Sempra Labs does not represent that every catalogue product has undergone Australian third-party testing.
Request a certificate
Need a batch COA?
Email or message us with the product name and batch number from your order. We will send the relevant COA directly.