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To prevent a urine specimen from becoming an unreliable pH
sample, the specimen should be:
Select one:
a. exposed to air for slightly more than 1 hour
b. allowed to rise to room temperature after refrigeration and
before testing so that any casts may break down to release
protein
c. allowed time for the urea to convert to ammonia in order to
decrease the pH
d. tested within 1 hour of collection
e. always refrigerated immediately upon collection - CORRECT
ANSWER-d. tested within 1 hour of collection
When placing a urine specimen tube into the centrifuge for
later creating a wet mount, where should you place an identical
tube containing water in that same centrifuge?
Select one:
a. a 2nd tube is not required
b. directly opposite the tube containing the urine specimen
,c. to the left of the urine specimen tube
d. right beside the tube containing the specimen
e. at a 90° angle from the urine specimen tube - CORRECT ANSWER-
b. directly opposite the tube containing the urine specimen
The principal reason for bracing the hand holding the needle
assembly against the patient's arm during phlebotomy is to:
Select one:
a. decrease the patient's discomfort
b. cause the evaluation tubes to fill more quickly
c. prevent excess needle movement
d. ease vein palpation
e. decrease the possibility of hemolysis - CORRECT ANSWER-c.
prevent excess needle movement
When a reagent strip is used to test a urine specimen and the
result is positive for ketones, this may be an indication of which
condition?
Select one:
a. liver damage
b. alkalosis
c. diabetes mellitus
d. hypercalcemia
e. poisoning - CORRECT ANSWER-c. diabetes mellitus
The measure of the degree of acidity or alkalinity of urine is
called:
,Select one:
a. supernatant
b. microscopic examination
c. specific gravity
d. pH
e. routine urinalysis - CORRECT ANSWER-d. pH
All the steps listed are appropriate when performing a capillary
puncture EXCEPT:
Select one:
a. gently rubbing the sides of the finger
b. placing a tourniquet around the finger
c. discarding the 1st drop of blood
d. selecting the ring finger of the hand
e. selecting the nondominant hand - CORRECT ANSWER-b. placing a
tourniquet around the finger
A capillary blood sample will be diluted with tissue fluid if:
Select one:
a. the thumb is used
b. it is immersed in cool water
c. the sides of the finger are gently rubbed
d. the 1st drop is discarded
e. the finger is squeezed excessively - CORRECT ANSWER-e. the finger
is squeezed excessively
, The most common micropuncture site on an adult is the:
Select one:
a. little finger
b. thumb
c. ring finger
d. ear lobe
e. outer heel - CORRECT ANSWER-c. ring finger
To transport oxygen and carbon dioxide to and from the body's
cells, what do erythrocytes need?
Select one:
a. hemoglobin
b. nitrates
c. sodium chloride
d. bilirubin
e. hematocrit - CORRECT ANSWER-a. hemoglobin
All the following are reasons to perform a hemoglobin EXCEPT:
Select one:
a. to detect inflammation
b. to monitor dehydration
c. to monitor the effectiveness of blood transfusions
d. to aid in determining blood loss
e. to detect anemia - CORRECT ANSWER-a. to detect inflammation