Third party testing and desiccated liver tablets

A third party test for desiccated liver tablets answers four separate questions, and a single certificate rarely covers all of them: identity, potency, heavy metals and microbes. A panel showing lead at 0.05 mg per kg tells you nothing about whether that batch contains liver tissue. When you ask a brand about testing, ask which panel was run, on which batch, by which lab.

What third party testing and desiccated liver tablets actually covers

Identity testing confirms the material is what the label says. For a liver product this matters more than usual, because desiccated liver is a whole tissue powder with no single marker compound. A lab looks for characteristic profiles rather than one clean signature.

Potency is the second question, and for liver it's genuinely hard to answer. There's no standardised active constituent to assay against, so most brands report the raw material weight and stop there. That's a disclosure rather than a potency claim.

Heavy metals is the third and the one that gets tested most often. Liver is a filtering organ, and cadmium, lead and arsenic are the usual targets. Results are reported in parts per million or in micrograms per gram, and the comparison that matters is against a published limit rather than another brand's figure. A reading of 0.05 ppm and one of 0.5 ppm are 10 times apart.

Microbial testing is the fourth. Total plate count, yeast and mould, E. coli and salmonella. For a dried animal tissue product, this is not a formality.

Why one certificate doesn't settle it

A certificate of analysis reports whatever assays the buyer ordered. A brand can run heavy metals only, publish that panel honestly, and still have no identity or microbial data at all. The document is accurate and incomplete at the same time.

Batch variation is the other half. A certificate from a test run 14 months ago describes a production lot you almost certainly don't own. Ask for the batch number on the panel and compare it with the number printed on your bottle.

Verification is voluntary in most of the market. That's the reason two similar products can differ so much, and it's also why the question of who paid for the testing matters. A lab commissioned directly by the brand is a weaker signal than one the brand can't influence.

I asked 3 brands last year for their most recent panel. Two sent a certificate from more than a year earlier with no batch match. One sent a current one, named the lab, and listed all four categories. That told me more than any product page did.

What a panel can't tell you

Passing four tests doesn't establish that the product helps you in any particular way. Testing is a safety and honesty check rather than an efficacy one, and a clean certificate should never be read as a benefit claim.

It also doesn't tell you the source. A panel confirms what's in the capsule, not how the animal was raised or where it came from, and those are separate questions a brand has to answer in words rather than in numbers.

Questions worth sending a brand

Ask for the batch number, the lab name, the test date and the 4 categories, and ask whether the panel covers 1 batch or 12 months of production. Four questions in one email, and the shape of the answer tells you as much as the content.

Then check the bottle against what comes back. If the certificate batch doesn't match the number on your label, ask again. That's not an accusation, it's the whole point of a batch-specific panel.

Compare heavy metal figures against a published limit rather than against a rival's number. Two products can look different and both sit comfortably inside the same reference range.

Keep the email. If you take the product for 6 months, a dated record of what was tested and when is the only documentation you'll have. It takes no effort to store and settles arguments later that memory won't.

Common questions

What does a certificate of analysis cover?

Whatever assays were ordered. Ask which were run before assuming anything.

Is testing legally required?

Verification is voluntary in most of the market, which is why brands differ so much.

What should I ask a brand?

Which batch was tested, by which lab, and for which four things.