This product is derived from the serum of normal, healthy cattle. It is purified by a modified heat-shock method combined with additional purification steps, followed by 0.2 µm filtration and vacuum freeze‑drying. The BSA has a purity of >98% and is free of fatty acids, proteases, and IgG. The lyophilized powder contains no salt; the labeled value corresponds to the protein mass. This product is specifically processed with an additional step to effectively remove fatty acids and small‑molecule hormones, and contains extremely low levels of metal ions. It is suitable for use in hormone or cholesterol assays where lipids or fatty acids may interfere with results, as well as for cell culture applications.