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.
How many grams of iron do you need per day? How many fat grams per day should you eat if you consume 1000 calories per day?   around 30 grams of fat. make sure your fat comes from protein, rather than carbs. if you consume 1000 calories a day, you will lose one pound a week. 5 people found this useful.