Definition. The urine creatinine test measures the amount of creatinine in urine. Creatinine is a breakdown product of creatine, which is an important part of muscle. Creatinine is removed from the body entirely by the kidneys. Creatinine can also be measured by a blood test.
Ketones are the byproduct of breaking fatty acids down to be burned. Okay, it's a water fast, but we can assume that after 3 days, ketosis is acheived. About 250 grams of fat is about the maximum amount of fat that will be burned daily. I say around 250-300 grams per day.
Small amounts of saturated fats can be incorporated into a healthy diet, but should be limited to less than 10% of your total calorie intake. That would be no more than 20 grams of saturated fat per day for a person consuming 2000 calories. There might be one exception in the saturated fat category â coconut oil.