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  2. Kt/V - Wikipedia

    en.wikipedia.org/wiki/Kt/V

    where C is the concentration [mol/m 3]; t is the time [s]; K is the clearance [m 3 /s]; V is the volume of distribution [m 3]; From the above definitions it follows that is the first derivative of concentration with respect to time, i.e. the change in concentration with time.

  3. Renal clearance ratio - Wikipedia

    en.wikipedia.org/wiki/Renal_clearance_ratio

    The renal clearance ratio or fractional excretion is a relative measure of the speed at which a constituent of urine passes through the kidneys. [ 1 ] [ 2 ] It is defined by following equation: c l e a r a n c e r a t i o o f X = C x C i n {\displaystyle clearance\ ratio\ of\ X={\frac {C_{x}}{C_{in}}}}

  4. Standardized Kt/V - Wikipedia

    en.wikipedia.org/wiki/Standardized_Kt/V

    Kt/V and standardized Kt/V are not the same. Kt/V is a ratio of the pre- and post-dialysis urea concentrations. Standardized Kt/V is an equivalent clearance defined by the initial urea concentration (compare equation 8 and equation 10).

  5. Assessment of kidney function - Wikipedia

    en.wikipedia.org/wiki/Assessment_of_kidney_function

    Abnormal kidney function may cause too much or too little urine to be produced. The ability of the kidneys to filter protein is often measured, as urine albumin or urine protein levels, [2] measured either at a single instance or, because of variation throughout the day, as 24-hour urine tests. [citation needed]

  6. Urea reduction ratio - Wikipedia

    en.wikipedia.org/wiki/Urea_reduction_ratio

    The URR is designed to measure the amount of dialysis given when the dialysis clearance of urea greatly exceeds the urea generation rate. In continuous hemodialysis or in peritoneal dialysis , for example, a considerable amount of dialysis is delivered, but the urea level remains roughly constant after the initial treatment of uremia, so the ...

  7. Dialysis adequacy - Wikipedia

    en.wikipedia.org/wiki/Dialysis_adequacy

    The normal clearance of urea is approximately 100 ml/min. A patient getting a conventional hemodialysis treatment, without remaining residual function, has a urea clearance of 10-15 ml/min. [citation needed]

  8. Renal physiology - Wikipedia

    en.wikipedia.org/wiki/Renal_physiology

    Urea is usually excreted as a waste product from the kidneys. However, when plasma blood volume is low and ADH is released the aquaporins that are opened are also permeable to urea. This allows urea to leave the collecting duct into the medulla, creating a hyperosmotic solution that "attracts" water.

  9. Reference ranges for urine tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_urine...

    Reference ranges for urine tests are described below: Measurement Lower limit Upper limit Unit Urinary specific gravity: 1.003 [1] [2] 1.030 [1] [2] g/mL Urobilinogen: