Clinical Lab Testing -- Urinalysis

Question 1

What type of urine specimen is preferred for a urinalysis?

Answer 1

Mid-stream clean and catch

Question 2

When performing a clean catch, the patient must clean the outside of what?

Answer 2

Urethra

Question 3

Within what period should urine be examined after collection?

Answer 3

Within 1 hr or refrigerate 4-6 degrees centigrade up to 8 hrs.

Question 4

Failure to examine under specimen handling could cause inaccurate results, which are?

Answer 4

1. Bacteria goes up
2. glucose level decrease
3. pH levels increases
4. Ketones level decrease
5. Decomposition of casts

Question 5

pH reagent in the urine

Answer 5

Measures acidity or alkalinity of the urine

Question 6

Protein Reagent

Answer 6

Detects the protein in the urine (proteinuria).

Seen in renal disease & UTI.

Question 7

Ketones Reagent

Answer 7

Excreted as a byproduct of fatty acid metabolism (ketonuria). Seen in diabetics.

Question 8

Bilirubin Reagent

Answer 8

Biproduct of hemoglobin breakdown.

Seen in liver disease and bile duct obstruction.

Question 9

Blood Reagent

Answer 9

Detects the presence of blood in the urine (hematuria).

Can indicate infection, trauma, or bleeding of the kidneys.

Question 10

Urobilinogen Reagent

Answer 10

Is a product of bilirubin degradation.

Elevated in presence of hepatic and/or hemolytic disease.

Question 11

Nitrite Reagent in the urine

Answer 11

Produced by gram-negative bacteria converting nitrate to nitrite. Can indicate infection if present in fresh specimen. Old specimen possible contamination

Question 12

Leukocyte Esterase Reagent in the urine

Answer 12

Produced by white blood cells in urine (pyuria).

Can indicate UTI.