Also run by LGC, Informed Protein is a global verification program built to solve a specific problem: the protein number on the label might not be the protein in the product. LGC's own survey of 61 protein supplements found that roughly 1 in 4 contained less protein than claimed on the label, including one product that delivered just 27% of its stated protein content. The standard industry test measures total nitrogen and converts it to protein, but it can't distinguish between functional protein and cheap amino acids like glycine or taurine added to inflate the reading. That's nitrogen spiking, and it means you could be paying for 23g of protein and getting significantly less.
Informed Protein goes deeper: it tests total protein via nitrogen, evaluates carbon-to-nitrogen ratios for batch consistency, runs free amino acid analysis to detect spiking, and screens for nitrogen-rich adulterants like melamine. Manufacturing facilities are also audited, and after certification, LGC continues purchasing products from retail monthly for blind re-testing.
All flavors of So Lean & So Clean are Informed Protein certified. When we say 23g of protein per serving, that number has been independently verified.