In most people acetoacetate in urine is not detectable any more after adapting to a lower carb, higher fat diet. (KetoDietApp.com)
Depending on how long you have been in ketosis, your body produces different types and amounts of ketones and you may not be able to detect acetoacetate when keto - adapted. (ketodietapp.com)
Within the mitochondria, BHB cleaves the carboxyl acid and becomes another ketone called acetoacetate. (drjockers.com)