The validity of “doubly-labeled water” results is dubious at best in an organism with so many pathways to feed the citric acid cycle. Specifically I’m referring

The validity of “doubly-labeled water” results is dubious at best in an organism with so many pathways to feed the citric acid cycle. Specifically I’m referring to fat adaptation and protein catabolism. Also, how does 600*(3.5-2.5)=6200/3.5?