Some Marketplace reports about vitamins and supplements published in November contained incorrect information, CBC has learned. Last fall, Marketplace commissioned lab testing for samples of fish oil, vitamin C and protein powder supplements to see if consumers are actually getting what they pay for. Based on those test results, Marketplace reported that Emergen-C and two protein powders: GNC Lean Shake 25 and Cytosport Muscle Milk failed to live up to label claims. However, subsequent re-testing of the samples has found that the lab results and analysis provided to Marketplace were incorrect, and that there is no evidence of problems with those products. The original lab tests were performed by an independent lab in Michigan, which is ISO-17025 accredited, registered with the U.S. Food and Drug Administration, and used by the supplement industry. The lab was recommended by Neil Thanedar, co-founder and CEO of LabDoor, a company that has products tested and makes those results public to help guide consumers about vitamins and supplements. CBC re-tested some of the products at other independent, accredited labs. None of them found problems with the samples. While Thanedar admits some of the lab results he provided to Marketplace were flawed, he was still unable to explain how the mistakes were made.