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  2. Free water clearance - Wikipedia

    en.wikipedia.org/wiki/Free_water_clearance

    A free water clearance of zero means the kidney is producing urine isosmotic with respect to the plasma. Values greater than zero imply that the kidney is producing dilute urine through the excretion of solute-free water. Values less than zero imply that the kidney is conserving water (likely under the influence of antidiuretic hormone, ADH ...

  3. Assessment of kidney function - Wikipedia

    en.wikipedia.org/wiki/Assessment_of_kidney_function

    One of the measures of kidney function is the glomerular filtration rate (GFR). Other tests that can assess the function of the kidneys include assessment of electrolyte levels such as potassium and phosphate, assessment of acid-base status by the measurement of bicarbonate levels from a vein, and assessment of the full blood count for anaemia.

  4. Hypercapnia - Wikipedia

    en.wikipedia.org/wiki/Hypercapnia

    Hypercapnia (from the Greek hyper, "above" or "too much" and kapnos, "smoke"), also known as hypercarbia and CO 2 retention, is a condition of abnormally elevated carbon dioxide (CO 2) levels in the blood. Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs.

  5. Renal compensation - Wikipedia

    en.wikipedia.org/wiki/Renal_compensation

    Kidneys within the human body, where renal compensation takes place. Renal compensation is a mechanism by which the kidneys can regulate the plasma pH.It is slower than respiratory compensation, but has a greater ability to restore normal values.

  6. Reference ranges for urine tests - Wikipedia

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

    Free catecholamines, dopamine: 90 [3] 420 [3] μg/d Red blood cells (RBCs) 0 [4] [2] 2 [2] - 3 [4] per High Power Field (HPF) RBC casts: n/a 0 / negative [2] White blood cells (WBCs) 0 [2] 2 [2] pH: 5 [2] 7 [2] (unitless) Protein: 0: trace amounts [2] Glucose: n/a: 0 / negative [2] Ketones: n/a: 0 / negative [2] Bilirubin: n/a: 0 / negative [2 ...

  7. Urinalysis - Wikipedia

    en.wikipedia.org/wiki/Urinalysis

    Trace levels of protein in the urine can be normal, [60] but high levels (proteinuria) can indicate kidney disease. [45] Most cases of proteinuria are caused by increased levels of albumin , [ 61 ] which test strips can detect relatively well; but they are markedly less sensitive to other proteins, such as Bence-Jones protein , [ 62 ] which may ...

  8. Hypernatremia - Wikipedia

    en.wikipedia.org/wiki/Hypernatremia

    [1] [2] Low blood protein levels can result in a falsely high sodium measurement. [4] The cause can usually be determined by the history of events. [1] Testing the urine can help if the cause is unclear. [1] The underlying mechanism typically involves too little free water in the body. [6]

  9. Urine test - Wikipedia

    en.wikipedia.org/wiki/Urine_test

    A urine test is any medical test performed on a urine specimen. The analysis of urine is a valuable diagnostic tool because its composition reflects the functioning of many body systems, particularly the kidneys and urinary system , and specimens are easy to obtain. [ 1 ]