ANSWERS A+ 2025
✔✔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 - ✔✔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 - ✔✔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 - ✔✔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 - ✔✔a. to detect inflammation
✔✔All the following demonstrate quality control EXCEPT:
Select one:
a. proper documentation
b. treating every customer properly
c. testing with control samples
d. monitored test methodology
e. calibrating equipment - ✔✔b. treating every customer properly
,✔✔After you have washed your hands, put on PPE, and assembled the equipment and
supplies, what is your next step in obtaining a capillary blood sample?
Select one:
a. Wipe the patient's ring finger with an alcohol wipe.
b. Ask the patient whether they are left handed or right handed.
c. Perform the capillary puncture.
d. Cleanse the puncture site with an alcohol wipe.
e. Identify the patient. - ✔✔e. Identify the patient.
✔✔What can you do to lower the risk of bruising after venipuncture?
Select one:
a. Place a bandage on the puncture site.
b. Keep the tourniquet in place for 1 full minute the procedure.
c. Wipe the puncture site with an alcohol wipe.
d. Apply pressure to the puncture site.
e. Apply a heating pad to the puncture site and have the patient bend his or her arm to
keep it in place. - ✔✔d. Apply pressure to the puncture site.
✔✔While performing a venipuncture, you notice that a hematoma is forming. You
should do all the following EXCEPT:
Select one:
a. apply pressure to the site
b. remove the vacuum tube and needle
c. complete the collection of the specimen
d. look for a different site on either arm
e. remove the tourniquet - ✔✔c. complete the collection of the specimen
✔✔Which needle gauge will result in less blood cell damage during venipuncture
collection?
Select one:
a. 23-gauge
b. 18-gauge
c. 20-gauge
d. 16-gauge
e. 21-gauge - ✔✔d. 16-gauge
✔✔Vacuum tubes used in venipuncture have different color tops. The reason for this is
to differentiate among the:
Select one:
a. tubes sizes
b. additives that may be within
c. preferred collection methods
d. tube quantity levels
e. morphologic studies - ✔✔b. additives that may be within
, ✔✔A setup for venipuncture should always include extra:
Select one:
a. sharps containers
b. tourniquets
c. latex gloves
d. vacuum tubes
e. blood pressure cuffs - ✔✔d. vacuum tubes
✔✔It is acceptable for a blood clot to form in a _______-topped tube.
Select one:
a. blue
b. lavender
c. green
d. light blue
e. red - ✔✔e. red
✔✔Never leave a tourniquet on the arm for longer than:
Select one:
a. 120 seconds
b. 45 seconds
c. 30 seconds
d. 90 seconds
e. 60 seconds - ✔✔e. 60 seconds
✔✔The primary purpose for anchoring a vein in performing a venipuncture is:
Select one:
a. to prevent it from collapsing
b. to prevent any blood specimen leakage into surrounding tissue
c. to keep the patient from moving
d. to keep the patient comfortable
e. to prevent it from rolling - ✔✔e. to prevent it from rolling
✔✔What angle should your needle position be in to perform venipuncture?
Select one:
a. 30° angle with the bevel down
b. 15° angle with the bevel up
c. 20° angle with the bevel down
d. 35° angle with the bevel up
e. 15° angle with the bevel down - ✔✔b. 15° angle with the bevel up
✔✔All of the following are examples of properly disposed venipuncture equipment and
supplies EXCEPT:
Select one:
a. placing used alcohol wipe in wastebasket
b. placing the used needle and holder together into a puncture-proof container