Many enzymes will not work without the presence of an additional nonprotein substance called a cofactor. 许多酶如不外加一种叫做辅助因子的非蛋白质物质就不能工作。
The appearance of a nonprotein spike would indicate a possible contaminant in the sample that could then be identified through other tests. 如果仪器上显示非蛋白质物质含量激增,则表示样本可能遭受污染,之后可以透过其他测试来确认。