Serum creatinine (Cr, Crea)

Creatinine in the blood is mainly filtered by the glomerulus, but is not absorbed by the renal tubules. When the glomerular filtration rate drops to 1/3 of normal people, serum creatinine increases significantly. Normal serum creatinine (Cr, Crea): male 53 ~ 106 micromol / liter (0.6 ~ 1.2 mg / dl); female 44 ~ 97 micromol / liter (0.5 ~ 1.1 mg / dl). Basic Information Specialist classification: urinary examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Found in progressive muscle atrophy, leukemia, anemia, liver dysfunction and pregnancy. Normal value: Serum creatinine (male): 53-106 micromoles / liter of serum creatinine (female): 44-97 micromoles / liter Above normal: Found in a variety of kidney disease, acute or chronic renal failure, severe congestive heart failure, myocarditis, muscle damage, giant disease, acromegaly and so on. negative: Positive: Tips: Do not eat too greasy, high-protein foods the day before the blood draw, avoid heavy drinking. Normal value Male 53 ~ 106 micromol / liter (0.6 ~ 1.2 mg / deciliter); Female 44 ~ 97 micromol / liter (0.5 ~ 1.1 mg / deciliter). Clinical significance Increased: seen in a variety of kidney disease, acute or chronic renal failure, severe congestive heart failure, myocarditis, muscle damage, giant disease, acromegaly and so on. Reduction: seen in progressive muscle atrophy, leukemia, anemia, liver dysfunction and pregnancy. Low results may be diseases: hyperosmolar non-ketotic diabetic coma, high results of systemic purulent infection may be diseases: staphylococcal scalded skin syndrome, anemia considerations First, the precautions before blood draw 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the medical examination, you should start fasting for 12 hours to avoid affecting the test results. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. Second, should pay attention after blood draw 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. 3. Please inform the doctor about the recent medication and special physiological changes before the test. Inspection process Using the enzymatic method and the picric acid method, the standard solution was diluted 2 to 128 times with distilled water, and the results were subjected to t-test. Not suitable for the crowd Generally no taboos. Adverse reactions and risks Generally no complications and harm.