Beyond the label: the importance of scientific backing and quality control in protein supplements
Choosing a protein supplement should not be based only on the brand or the price. The real difference is whether its quality has been verified by an independent laboratory. In the United States, regulation falls under the Food and Drug Administration (FDA), but this agency does not approve or test supplements before they are sold. Outside the U.S., each country has its own health authority. For example, in Guatemala, regulation depends on the Ministry of Public Health and Social Assistance, and the criteria are not the same from country to country. That is why phrases such as cGMP or manufactured in a registered facility do not mean that the product has been tested by an external laboratory. The real assurance comes when a protein has independent certification, such as: • NSF International – NSF Certified / NSF Certified for Sport • United States Pharmacopeia – USP Verified • Informed Choice / Informed Sport • ConsumerLab Why is this important? When a protein is not tested by third parties, it may contain: • heavy metals (lead, arsenic, cadmium, mercury), • microbiological contamination (bacteria and molds), • undeclared traces of allergens, • less actual protein than what is stated on the label, • residues or contaminants from the manufacturing process. This has been documented by Consumer Reports and the Clean Label Project. The real difference comes down to one simple question: Who verified this product, and under which standards? Choosing proteins with independent certification is not an exaggeration. It is a responsible practice, based on evidence, transparency, and respect for health. Pauline Barbick Sports Nutritionist & Strength and Conditioning Specialist ————————————————————————— Más allá de la etiqueta: la importancia del respaldo científico y los controles de calidad en suplementos de proteína Elegir una proteína no debería basarse solo en la marca o el precio. La diferencia real está en si su calidad ha sido verificada por un laboratorio independiente.