Kidney Function Tests Flashcards
The glomerulus is the basic structural and functional unit of the kidney
True or false
False
Blood cells and proteins are important substances that are allowed to pass freely through the filtering apparatus of the kidneys.
True or false
False
The total NPN’s in the blood are breakdown products of protein metabolism.
True or false
True
One of the following is an automation method for the determination of urea.
Conductivity rate
The best index of kidney impairment because it is constantly removed in the body.
Creatinine
What will be the creatinine clearance using the following data:
Urine creatinine- 0,8 mg/dL Serum creatinine= 2,4 mg/dL 24 hr urine volume= 1.4 L Body surface area= 1.8
0.31 ml/min
Why is the Lloyds method the reference method for creatinine determination?
It is free from interferences
Conversion factor of uric acid
59.5
Conversion factor of creatinine
88.4
Conversion factor of BUN
0.357
Uric acid is derived from the degradation of nucleic acids
True or false
True
Reabsorption is the mechanism of holding back the important metabolites which were filtered, and the return of the filtered molecules from the tubes to the blood.
True or false
True
This refers to the accumulation of nitrogen containing compounds in the blood.
Azotemia
In the determination of total NPN, the first step is the breakdown of these substances in the PFF as:
Ammonia
The capillary network producing the blood filtrate that enters the urinary or renal tubules is known as the nephron
True or false
False
The determination of serum ammonia may be used for the diagnosis of one of the following
Reye’s syndrome
Glomerular filtration is the volume of filtrate produced by both kidneys per minute.
True or false
True
Vasopressin is the hormone that controls the reabsorption of sodium
True or false
False
This analyte is considered as the best rough guide to renal failure.
Urea
One of the functions of the kidneys is the formation of the renal erythropoietic factor which is needed for the synthesis of erythropoietin.
True or false
True
The antidiuretic hormone acts on the collecting duct cells stimulating the formation of water channels on the membrane of the cells.
True or false
True
One of the methods for uric acid determination measure the amount of hydrogen peroxide formed
Uricase hantzsch method
These hormones increased BUN levels
Glucocorticoids and T3 and T4
This test measures effective renal plasma flow in the absence of a tubular functional impairment
PAH clearance
Caused by obstruction of urine flow anywhere in the urinary tract
Renal
Decreased renal function
Post renal
Reduced blood flow to the kidneys
Pre renal
