In this article. Creatinine is a waste product from the normal breakdown of muscle tissue. As creatinine is produced, it's filtered through the kidneys and excreted in urine. Doctors measure the blood creatinine level as a test of kidney function.The kidneys ' ability to handle creatinine is called the creatinine clearance rate, which helps to estimate the glomerular filtration rate (GFR) -- the rate of blood flow through the kidneys.s creatinine is produced, it's filtered through the kidneys and excreted in urine. Doctors measure the blood creatinine level as a test of kidney function.
There are 163 calories in 1 medium White Potato (Flesh and Skin, Baked). Calorie breakdown: 1% fat, 90% carbs, 9% protein.
Raw Red Potatoes. A raw small red potato, one that is 1 3/4 inch to 2 1/4 inch in diameter, contains 119 calories. If you are dicing them, a half a cup of diced potatoes contains 52 calories. If you bake, boil or steam your potatoes, you add no additional calories. Very few people eat their red potatoes without toppings.