Limiting the testing of urea: Urea along with every plasma creatinine test?

Urea and creatinine concentration, the urea: creatinine ratio

This is the second of two articles that together aim to explore current understanding of the clinical value of measuring serum/plasma urea concentration. The main focus of the first article [1] was physiological topics, such as urea production and renal processing of urea. The causes of increased and reduced plasma/serum urea concentration were also discussed. The main focus of this second arti...

Urea and creatinine excretion

Plasma urea and creatinine concentrations and urea and creatinine clearances and excretion were measured in a sample of 40 infants of 25*5-33 weeks' gestation, birth weight 720-2000 g, between the ages of 0 5 and 33 days. Creatinine excretion rate was between 60 and 120 gmol/kg/day in the first five postnatal weeks (mean 90.5) and was independent of sex or growth retardation. This can be used i...

Milk Urea Nitrogen Testing

Evaluation of the effect of exercise on serum creatinine and urea nitrogen in hemodialysis patients

Introduction. Chronic renal failure is a progressive disease in which kidney function is impaired, so that the body can not metabolize and maintain fluid balance and electrolytes. Therefore, the present study investigated changes in serum creatinine and urea nitrogen in hemodialysis patients in response to exercise. Materials and Methods. The subjects of this study were dialysis patients who we...

High urea and creatinine concentrations and urea transporter B in mammalian urinary tract tissues.

Although the mammalian urinary tract is generally held to be solely a transit and storage vehicle for urine made by the kidney, in vivo data suggest reabsorption of urea and other urine constituents across urinary tract epithelia. To determine whether urinary tract tissue concentrations are increased as a result of such reabsorption, we measured urea nitrogen and creatinine concentrations and d...