Laboratories on UK brand COAs

What matters about a laboratory

Location matters less than accreditation

A laboratory in Germany, the UK or elsewhere can produce equally valid results if it is accredited for the tests reported. UKAS accredits UK laboratories;^[2] other countries have their own bodies, with international recognition arrangements. “UK lab tested” describes a postcode, not quality; see “UK lab tested” claims and lab accreditation.

Brands that use several laboratories

Some brands commission different laboratories for different purposes: one for a broad contaminant panel, another for per-serving metals, a third for composition such as fulvic acid. That is common and can be a sign of thorough testing. The key is to read each report for what it covers, and to check which batch or sample each one relates to.

A worked example: three documents

Read together, they show a broad contaminant panel for the current batch, a per-serving metals view and earlier composition data. Nature Elixirs is a brand evaluated by Best Shilajit UK. Read our evaluation to see the evidence and documentation we reviewed. See the evaluation.

Different bases need care

The Eurofins certificate reports metals per 0.5 mL serving, for example 0.0367 µg of lead,^[4] while the AGROLAB report uses mg/kg. These can’t be compared directly without knowing the serving’s weight and basis; see units on lab reports.

How to check a laboratory yourself

1. Search the laboratory nameDoes it have a professional website and address?
2. Check accreditationIn the national body’s directory.
3. Confirm the reportIf in doubt, contact the laboratory with the sample number.

Red flags about a laboratory

• No address or contact detailsHard to verify.
• No accreditation statementAsk whether it is accredited for these tests.
• Laboratory owned by the brand, presented as independentAsk about ownership.

More red flags: red flags in a lab report.

Why composition reports may be older

Composition testing, such as fulvic acid, is often done less frequently than contaminant testing, and may relate to an earlier sample. That is reasonable, provided the report is clearly dated and its sample identified, as with the IAS report above.^[5]

Independence and ownership

Most third-party laboratories are independent businesses. Occasionally, a laboratory is owned by, or closely linked to, a supplier or brand. That doesn’t make its results wrong, but it reduces independence. If a report comes from an unfamiliar laboratory, check who owns it and whether it is accredited for the tests reported.

Reports from abroad

Reports from laboratories abroad may be partly in another language, use different decimal conventions, or cite national versions of standards. These are normal features, not red flags. Look for the batch, the results with units, the detection limits and the accreditation statement.

Putting it into practice

When a brand shares reports from several laboratories, make a quick list: which laboratory, which tests, which batch or sample, and which basis. That turns a stack of documents into a clear picture of what has and hasn’t been tested for the batch you are buying.

Questions to ask about a laboratory

If a laboratory is unfamiliar, ask the brand three simple questions: which laboratory did the testing, is it accredited for these tests, and is it independent of the brand and its supplier? A brand that knows its testing well will answer quickly and may share the accreditation details. Their answers, and how readily they give them, are a useful measure of how seriously the brand takes testing.

The bottom line

Judge laboratories on identity, accreditation for the tests reported, independence and the batch link, not on country or name. When a brand publishes several reports, read each for what it covers and on what basis, and check which batch or sample it describes.

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