2 Answers

2007 I had kidney failure--  My creatinine  level was through the roof, no cause that was found, fortunately after a week in the hospital and a day before dialysis, my blood was checked one more time and unknown to the doctors, it started going back down, both kidneys stopped and a few days later started back up.. although the coming of the sickness was a couple of weeks before total collapse from it. You lose all energy, weak, want to sleep all the time and very thirsty, welts all over your body as the toxins look for another escape - A really bad experience--   2007 was a bad year for me as I was diagnosed with cancer AND kidney failure in that same year, however, today my kidneys are functioning perfectly and after surgery and radiation, the cancer is gone too.. :)

Luck guy i guess..

Creatinine: A chemical waste molecule that is generated from muscle metabolism. Creatinineis produced from creatine, a molecule of major importance for energy production in muscles. Approximately 2% of the body's creatine is converted to creatinine every day. Creatinine is transported through the bloodstream to the kidneys. The kidneys filter out most of the creatinine and dispose of it in the urine.

Although it is a waste, creatinine serves a vital diagnostic function. Creatinine has been found to be a fairly reliable indicator of kidney function. As the kidneys become impaired the creatinine will rise. Abnormally high levels of creatinine thus warn of possible malfunction or failure of the kidneys, sometimes even before a patient reports any symptoms. It is for this reason that standard blood and urine tests routinely check the amount of creatinine in the blood.

Normal levels of creatinine in the blood are approximately 0.6 to 1.2 milligrams (mg) per deciliter (dl) in adult males and 0.5 to 1.1 milligrams per deciliter in adult females. (In the metric system, a milligram is a unit of weight equal to one-thousandth of a gram, and a deciliter is a unit of volume equal to one-tenth of a liter.) Muscular young or middle-aged adults may have more creatinine in their blood than the norm for the general population. Elderly persons, on the other hand, may have less creatinine in their blood than the norm. Infants have normal levels of about 0.2 or more, depending on their muscle development. A person with only one kidney may have a normal level of about 1.8 or 1.9. Creatinine levels that reach 2.0 or more in babies and 10.0 or more in adults may indicate the need for a dialysismachine to remove wastes from the blood.

Certain drugs can sometimes cause abnormally elevated creatinine levels.

http://www.medterms.com/script/main/art.asp?articlekey=12550