Why COA is important

Searching for a peptide COA in the Philippines? Here is what a certificate of analysis tells you, and what it does not. A COA is a report from a lab independent of the seller, naming the batch and the tests it ran. It covers only those tests. Identity confirms the compound is what the label says. Purity gives a percentage. Endotoxin measures bacterial toxins, and does not establish identity or purity. A good COA shows identity by mass spec or HPLC, purity of 98% or more, a batch number matching your vial, and a test date within 12 months. Walk away if there is no COA, no batch number, one report for all products, in-house testing only, or a lab you cannot find. A COA can be fabricated, so match the batch to your vial, then look the report up on the lab's own site with its key. To test a vial yourself, the article lists three labs that accept samples from readers: Janoshik in the Czech Republic, and Colmaric Analyticals and Micro Quality Labs in the USA. Janoshik publishes $215 to $450 for an identity, purity and quantity analysis, with an average turnaround of 7 business days. Our partner and supplier, Primara Labs, publishes its batch reports. Retatrutide batch RETA-4728-A was tested by Janoshik for bacterial endotoxin. That report covers endotoxin only, not identity or purity. Batch reports are published at primaralabs.com/coa as they are issued. Primara also offers a 60-day money-back guarantee. If an accredited independent laboratory reports the vial is not the compound on the label, Primara refunds what you paid. Primara lists a retatrutide research vial at [₱3,390 for the 20 mg vial], with bacteriostatic water, syringes and alcohol pads included. Read the full COA guide on Philippines Peptides, then see the batch reports at Primara Labs and order on WhatsApp. [Figures in square brackets corrected on 3 November 2026 from Primara's current catalogue: the narration gives the price of the 15 mg retatrutide vial, retired on 12 October 2026.]