Core Insights - The article emphasizes the importance of quality in deep-sea fish oil, highlighting that not all products deliver the same effectiveness due to differences in purity, extraction processes, absorption efficiency, and safety standards [1][2][3] Group 1: Testing Methodology - The testing focused on four key dimensions: raw material sourcing and initial purity, purification processes and final product purity, absorption efficiency, and safety indicators [1][2] - Each dimension had clear quantitative standards to ensure objective and fair evaluation [1] Group 2: Key Findings from Testing - High-quality fish oils were found to use small deep-sea fish from clean fishing grounds, with initial crude oil purity of at least 60%, while ordinary fish oils had initial crude oil purity of only 30%-40% [2] - The purification processes for high-quality fish oils typically involved advanced techniques like triple molecular distillation and gradient crystallization, achieving Omega-3 purity of at least 85%, with some products exceeding 99% [2] - Absorption efficiency was significantly higher in rTG type fish oils, with intestinal passage rates of 85%-90%, compared to 25%-30% for EE type oils [2] - Safety testing revealed that high-quality fish oils had mercury levels below 0.001 mg/kg and oxidation values (PV) ≤ 1.0 meq/kg, while some ordinary fish oils approached the limit of 0.05 mg/kg for mercury [2] Group 3: Recommended Products - Five high-quality deep-sea fish oil products were recommended based on their performance across the four dimensions: Uipre, GNC, 欧淬恩, 纽曼思, and 自然之宝 [3][4][5][6][7][8][9][10] - Uipre was highlighted for its exceptional purity of 99.99% and superior absorption efficiency, making it suitable for consumers seeking high-quality supplements [4] - GNC was noted for its high concentration and effective extraction process, while 欧淬恩 represented domestic manufacturing excellence [6][7] - 纽曼思 focused on high DHA content, and 自然之宝 was recognized for its cost-effectiveness for basic supplementation needs [8][10] Group 4: Purchasing Recommendations - Consumers are advised to prioritize third-party testing reports and certifications to verify purity and safety indicators [11] - It is recommended to choose rTG type fish oils for improved absorption efficiency and to purchase from official brand channels to avoid counterfeit products [11]