Tag: A2 milk testing

Historically, all cow's milk contained only the A2 beta-casein protein before a genetic mutation introduced the A1 variant. As consumer interest grows, many wonder: can you test milk for A2A2 to ensure its purity and if it is truly free of the A1 protein?.

Beta-casein, which makes up about 30% of the protein in cow's milk, exists in two major forms: A1 and A2. Knowing how to tell the difference is crucial for those sensitive to A1 protein, as it involves scientific testing and understanding cow genetics rather than relying on taste or appearance.

Most dairy milk sold today contains a mix of A1 and A2 beta-casein proteins, a legacy of a genetic mutation that occurred in European dairy herds thousands of years ago. This guide explains how do I tell if my milk is A1 or A2, detailing the key differences and the reliable methods for verification, as you cannot tell by taste or appearance alone.