San Francisco, CA – November 7, 2013 – Today, LabDoor released its data and ratings on 50 best-selling protein supplements. LabDoor reverse-engineers products to find out what’s really inside, exposing inaccurate labels, contaminated products, and false claims. The FDA performs no pre-market regulation of protein supplements, leaving the responsibility of product safety testing to organizations like LabDoor.
Protein Supplement Winners and Losers:
- LabDoor scored MET-Rx Protein Plus as #1-ranked in overall quality. BSN True-Mass ranked #50 in this category.
- LabDoor scored Pure Protein 100% Natural Whey Protein as #1-ranked in value. GNC Pro Performance AMP Amplified Mass XXX ranked #50 in this category.
LabDoor’s quality ranking is based on five key factors – label accuracy, product purity, nutritional value, ingredient safety, and projected efficacy. (See: Understanding the LabDoor grades).
Other Key Findings:
- There is no significant correlation between quality and price in protein supplements (n=50, r2=0.0016). LabDoor plans to publish a scientific paper on this study in late 2013.
- Protein content (per serving) ranged from 11.3g to 61.9g. Price (per serving) ranged from $0.69 to $5.30.
- 63 different inactive ingredients and 147 different active ingredients were identified in at least one protein supplement analyzed.
- The single most common ingredient in the protein supplements tested was sucralose (41/50), not whey protein (40/50).
LabDoor’s full report on protein supplements is available at https://labdoor.com/c/protein.