Choosing a DCA supplier is not like buying a standard supplement. The quality variation between suppliers is enormous, the consequences of contamination are serious, and the lack of regulatory oversight means the burden of verification falls entirely on the buyer.

Here are the seven questions that matter most.

First: What assay method is used? Acceptable answer: HPLC. Unacceptable: titration only, or no method stated.

Second: Is MCA tested separately? This is the defining question. Most suppliers will not know what you mean, or will claim their purity figure covers it. It does not. MCA requires separate ion chromatography testing.

Third: Is the COA from an independent third-party laboratory? A COA issued by the manufacturer is self-certification. Look for Eurofins, SGS, Intertek, or a recognised national laboratory.

Fourth: Is a heavy metals panel included? At minimum: lead (Pb) and iron (Fe). Ideally: full ICP-MS panel.

Fifth: What is the moisture content? Sodium DCA is hygroscopic. High moisture content (above 1%) suggests improper storage or handling.

Sixth: Is the company registered and traceable? A registered business with a verifiable address, VAT number, and legal accountability is meaningfully different from an anonymous online seller.

Seventh: Can you see batch-specific results — not just a generic template? Every batch should have its own COA with specific numerical results.

This article is for informational and educational purposes only. AuraDCA products are intended for research use only.