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A new spectrophotometric method for the determination of serum glutamic oxalacetic transaminase§ (SGOT) is described which uses standardized technics and prepackaged reagents. A study was made of this new method in three laboratories and was compared with the routine methods, using identical serum specimens. The new procedure gave good reproducibility and precision. In all methods studied there was evidence of failure of linearity of response at the two highest activity levels examined.
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Winsten et al. (1969) studied this question.
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