A first morning urine specimen collected on a 60 year old inpatient female showed the following results:Specific gravity: 1.025 microscopic exam of urine sediment:
pH : 7.0 Leukocytes: 5 10/ hpf
Leukoctyes 2+ Red cells: 2 5/ hpf
Nitrite 3+ Squamous cells: 2+
Protein negative
White cell cast: 1 2/hpf
Glucose negative
Bacteria: 3+
Ketone negative
Blood trace
Urobilinogen negative
Bilirubin negative
The above results are consistent with:
A) Pyelonephritis
A random urine specimen was received in the laboratory on a 32 year old female who noted an increase in appetite and thirst over the past six months although she only gained 5 lbs. The patient had complaint of frequent urination (polyuria) but no associated burning in voiding (dysuria). The routine UA results were:
Color: Yellow Microscopic exam:
Appearance: Clear WBC/hpf: 1+
Specific gravity: 1.010 RBC rare
pH: 6.5 Casts: cellular casts (occasional)
Protein 1+
Glucose 2+
Ketone: Small
Bilirubin: negative
Urobilinogen: negative
Blood: negative
The above results are consistent with:
C) Diabetes
The diluting and concentrating ability of the kidneys may be measured by performing which of the following urine tests?
C) Specific gravity
The primary constituent of hyaline casts is:
A) protein
The principle of the colorimetric reagent strip test for hemoglobin is based on the peroxidase activity of hemoglobin in catalyzing the oxidation of a dye with peroxide to form a colored compound. This method may yield false negative results for the presence of hemoglobin when the urine specimen contains:
A) Ascorbic acid
To preserve the sensitivity of the reagent test strips used for the chemical evaluation of urine, how should the strips be handled?
D) Protected from excessive heat
The colorimetric reagent strip test for protein, (i.e., Chemstrip Super UA) is most sensitive towards:
B) Albumin
The first morning urine specimen is the optimum specimen for routine urinalysis because
C) It is the most concentrated.
Small "coffin lid" crystals found in normal alkaline or neutral urine specimens.
D) Triple phosphate crystals
A routine urinalysis is performed on a young child suffering from diarrhea. The reagent test strip is negative for glucose but positive for ketones. These results may be explained by which of the following statements?
D) The child is suffering from increased catabolism of fat because of decreased intestinal absorption
Urine specific gravity may be measured as an indicator of the kidney's ability to:
A) Concentrate urine
Which of the following casts is most indicative of severe renal disease?
A) waxy
White blood cell casts are most likely to indicate disease of the:
B) kidney
Yeast found in urine can be differentiated from red cells by adding:
A) Acetic acid
Which of the following conditions is associated with the greatest proteinuria
C) nephrotic syndrome
C) granular cast
A urine sample has a negative blood reaction and 510cells per highpowerfield that resemble red blood cells. What is the best course of action?
a) Mix a drop of sediment with 1 drop of WBC diluting fluid and reexamine
b) Report the results without further testing
c) Repeat the dipstick; if blood is negative, report the results
d) If the leukocyte esterase test is positive, report the cells as WBCs
a) Mix a drop of sediment with 1 drop of WBC diluting fluid and reexamine
The following urinalysis results were found on a 35 year old woman:
SG = 1.015
pH = 7.5
Protein = Trace
Glucose = Small
Ketone = Negative
Blood = Negative
Leukocytes = Moderate
Microscopic findings: 510
RBCs /HPF, 2550
WBCs / HPF
Select the most appropriate course of action from the choices below.
C) Recheck the blood reaction; if negative, look for budding yeast
(T/F) Urine microalbumin can be detected with a urine dipstick.