Creatinine serum, normal values

If the test is positive, the urine is examined microscopically for red blood cells. If no red blood cells are found, a tentative diagnosis of myoglobinuria is made, serum chemistries are obtained, and the patient is held to rule out rhabdomyolysis. If the uric acid and creatinine kinase (CK) values are normal, and the patient is asymptomatic, he/she is discharged from the hospital. Routine toxicology tests include urinary PCP, serum alcohol, and hypnotic screen. 

Contraindications Acute renal insufficiency, anuria, BUN and serum creatinine levels more than twice normal values, hyperkalemia... 

Figure shows how the GFR must fall to about half its normal value before a significant increase in serum creatinine becomes apparent. Flence. a normal serum creatinine (i.e. within the reference range) does not necessarily mean all is well. The reference intervals will vary with age and body si/e. For example, consider an asymptomatic person who shows a scrum creatinine of 130 pmol/l ... 

Determining serum creatinine is of utmost importance in calculating renal function. Normal values... 

Monitor the following serial laboratories for comparison to baseline values every 6 hours in the first 24 hours and daily thereafter until normalized sodium, serum creatinine, blood urea nitrogen, serum lactate, glucose, bilirubin, hemoglobin, hematocrit, platelets, prothrombin time, partial thromboplastin time, arterial blood gases, and pH. 

An alternative guide for determining reduced dosage at 8-hour intervals (for patients whose steady-state serum creatinine values are known) is to divide the normally recommended dose by the patient s serum creatinine. 

Bachorzewska-Gajewska FI, Malyszko J, Sitniewska E, Malyszko JS, Pawlak K, Mysliwiec M, Lawnicki S, Szmitkowski M, Dobrzycki S. Could neutrophil-gelatinase-associated lipocalin and cystatin C predict the development of contrast-induced nephropathy after percutaneous coronary interventions in patients with stable angina and normal serum creatinine values Kidney Blood Press Res 2007 30 408-415. 

Other nutrition goals for ARF are patient-specific. It may be necessary to limit fluid intake in severely volume-overloaded patients even though this means restricting parenteral or enteral nutrition. Septic patients with ARF usually are hypercatabolic. The net protein catabolism results in rapidly rising BUN and serum creatinine values. The normalized protein catabolic rate has been reported to be 1.75 g/ kg per day, but this value varies widely with each patient. Most patients with ARF cannot tolerate the amount of fluid required to replace catabolized protein unless they are receiving continuous RRT or daily hemodialysis to remove excess volume. 

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