A method is described forthe analytical determination of creatine kinase in an aqueous liquid, such as blood serum. This method comprises:
(A) contacting (1) a sample of the liquid to be analyzed, and (2) reagents which effect in the presence of a creatine kinase-containing liquid, an ordered sequence of reactions wherein: (a) creatine phosphate and adenosine diphosphate react in the presence of creatine kinase to form creatine and adenosine triphosphate; (b) glycerol is phosphorylated in the presence of glycerol kinase and adenosine triphosphate to form L-a-glycerophosphate; and (c) L-a-glycerophosphate is oxidized in the presence of a-glycerophosphate oxidase and a colorimetric indicator composition to produce an optical density change; and
(B) quantitatively detecting the rate of such change.
This method can be practiced in solution or on "dry" analytical elements containing a plurality of zones.
描述了一种分析测定
水液(如血清)中
肌酸激酶的方法。该方法包括
(A) 将 (1) 待分析液体样品和 (2) 试剂接触,这些试剂在含有
肌酸激酶的液体中会发生有序的反应序列,其中包括(a)
磷酸肌酸和
二磷酸腺苷在
肌酸激酶存在下发生反应,形成
肌酸和
三磷酸腺苷; (b)
甘油在
甘油激酶和
三磷酸腺苷存在下被
磷酸化,形成 L-a-
甘油磷酸酯;以及 (c) L-a-
甘油磷酸酯在
甘油磷酸酯氧化酶和比色指示剂组合物存在下被氧化,产生光密度变化;以及 (A) 定量检测
肌酸激酶和
二磷酸腺苷的浓度。
(B) 定量检测这种变化的速率。
这种方法可以在溶液中使用,也可以在含有多个区域的 "干 "分析元件上使用。