Is it possible or by making a chemical analysis of cells of different animals to determine whether

Is it possible or by making a chemical analysis of cells of different animals to determine whether it is a poikilothermic (cold-blooded) or homeothermic animal?

By making a chemical analysis of the cells, you can find out what type of animal the organism belongs to. This can be determined by the amount of unsaturated fatty acids. Warm-blooded animals have fewer of them, while cold-blooded animals have more. The fact is that in the cold season, when the ambient temperature is below zero Celsius, the cell can begin to freeze and collapse. Warm-blooded animals regulate and maintain the temperature. And in cold-blooded, to prevent cell freezing, there are unsaturated fatty acids. They play the role of a kind of antifreeze.