NSF Certified for Sport vs Informed Sport: Which Certification Should You Trust?

Two logos turn up on supplement tubs more than any others: NSF Certified for Sport and Informed Sport. Both signal that a product has been through independent testing, and both get treated as a general badge of quality. They aren't the same thing, they're run by different organisations, and if you compete in a tested sport the difference is worth understanding before you spend.

Who runs each programme

Informed Sport is operated by LGC, a laboratory business, and is the mark you'll see most often on UK and European products. NSF Certified for Sport is run by NSF, a US public-health organisation, and shows up more on American brands and across North American pro sport. A product sold in the UK can carry either logo, both, or neither.

What each certification actually checks

The two programmes overlap more than they differ, but the emphasis isn't identical.

Informed Sport

• Screens the finished product against a broad list of substances banned in sport.
• Works batch by batch — the headline feature is that certified batches are tested before release.
• Backs this up with blind sampling of products bought off the shelf.

NSF Certified for Sport

• Also screens for substances banned in sport, against its own published list.
• Checks that what's in the tub matches what the label declares, and screens for certain contaminants.
• Audits the manufacturing site for good manufacturing practice as part of certification.

In plain terms: Informed Sport is best known for testing every batch; NSF is known for pairing banned-substance screening with label-accuracy and facility auditing. Both publish a searchable database of certified products.

The comparison at a glance

What "tested" does and doesn't promise

Neither logo is a cast-iron guarantee. Both programmes describe themselves as risk reduction: a laboratory can only say a substance wasn't detected down to its testing limit, not that it's impossible any trace exists. That isn't a reason to distrust them — independent testing is far better than none — but it's why anti-doping rules still put the final responsibility on the competitor, and why checking the specific batch matters.

How to verify a product, whichever logo it carries

1. Note the exact product, flavour and size — certifications are specific.
2. Find the batch or lot code, usually printed near the base of the tub or on the pouch seal.
3. For Informed Sport, search informed-sport.com. For NSF, use the NSF Certified for Sport database or its app.
4. If the product or batch isn't listed, treat it as uncertified, even if the packaging shows the artwork. Printed packaging can outlast a lapsed certification.

So which should you look for?

If you're drug-tested, the honest answer is that either is a reasonable filter, and the one that matters is whichever your sport, federation or team recognises — some name one specifically. Batch-level cover, Informed Sport's calling card, is the stricter model on paper because it ties the certificate to the exact batch you're holding. If you're not tested, neither logo tells you anything about flavour, mixability or price, so treat it as a tie-breaker rather than a reason to buy.

One thing both share: certification is per product and per batch, not per brand. A company running one certified line doesn't make its whole range certified.

The short version

• Informed Sport (LGC) tests batch by batch and is the common UK mark; NSF Certified for Sport (NSF) pairs banned-substance screening with label checks and facility audits, and is common on US brands.
• Check which one your sport or federation names, if any.
• Always verify the specific product and batch in the relevant database.
• If you're not competing in tested sport, buy on price, format and flavour and treat the logo as a bonus.

You can browse certified and standard options across the range at NE Commerce.