Which of the following is inappropriate when collecting urine for routine bacteria culture?
Sample may be held at 2-8˚C for up to 48 hours prior to plating
Which urine color is correlated correctly with the pigment-producing substance?
Deep yellow urine and yellow foam with bilirubin
Which of the following is most likely to cause a false-positive dry reagent strip test for protein?
Highly buffered alkaline urine
Which statement best describes the clinical utility of tests for microalbuminuria?
Testing may detect early renal involvement in diabetes mellitus
A negative glucose oxidase test and a positive test for reducing sugars in urine indicate:
Presence of a nonglucose reducing sugar such as galactose
Which ketone body is sodium nitroprusside specifically reacting with in the ketone test?
Which of the following conditions is associated with a negative blood test and an increase in urine urobilinogen?
Extravascular hemolytic anemia
Which of the following reagents is used to detect urobilinogen in urine?
Which statement about the dry reagent strip test for leukocytes is true?
The reaction is based upon the hydrolysis of substrate by WBC esterases
Which of the following statements about creatinine clearance is correct?
Creatinine clearance is dependant on lean body mass
All of the following statements regarding urinary casts are true except:
Casts can be seen in significant numbers even when protein tests are negative
What is the sediment with moderate hematuria and RBC casts most likely results from?
What does a urine sediment characterized by pyuria with bacterial and WBC casts indicate?
When examining urinary sediment, which of the following is considered an abnormal finding?
0-1 renal cell casts/lpf
Which statement about renal calculi is true?
Calcium oxalate and calcium phosphate account for about three quarters of all stones
Alkaptonuria, a rare hereditary disease, is characterized by the urine excretion of
Excessive lipid metabolism, as is seen in diabetes mellitus, is indicated by the presence in the urine of
A reagent test strip impregnated with a diazonium salt may be used to determine which analyte?
The strip test for hemoglobin may yield false positive results for the presence of hemoglobin when the urine specimen contains
What causes increased urinary excretion of protein during the day while at night there is a normal excretion of protein?
What is true about the final concentrating of urine in the kidney?
Vasopressin controls the collecting duct reabsorption of water
What grows in urine specimen is left standing at room temperature for several hoursing changes may occur?
Patients with diabetes insipidus tend to produce urine in ______ volume with _______ specific gravity.
If a fasting glucose level of 100 mg/dL is obtained, what is the expected fasting CSF glucose level?
The diagnosis of multiple sclerosis is often based upon which finding?
The presence of oligoclonal bands by electrophoresis
Which test best correlates with the severity of hemolytic disease of the newborn (HDN)?
Amniotic fluid bilirubin
What is true regarding the L/S ratio ?
A ratio of 2:1 or greater usually indicates adequate pulmonary surfactant to prevent respiratory distress syndrome