Equivalence Evaluation of the Chinese National Standard and the AOAC Official Method for Vitamin K1 Determination in Infant Formula

Key Points

• Vitamin K1 levels were reliably measured using both methods, indicating their comparability in accuracy and results.
• The methods produced similar concentration results, with a correlation coefficient of 0.95 across samples analyzed.
• Comparison through statistical modeling confirmed equivalent performance of the standards for vitamin K1 quantification.
• Establishing equivalence may lead to streamlined testing processes and improved nutrient regulation for infant nutrition.