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WorksheetsCapillary Puncture
Total questions: 10
Worksheet time: 5mins
Which of the following is a recommended site for finger puncture in adults?
End segment of the little finger
Distal segment of the middle finger
Plantar surface of the index finger
Proximal segment of the ring finger
When selecting a dermal puncture device, the
most critical consideration is the:
width of the incision
amount of blood needed
depth of the incision
tests requested
The concentration of this analyte is higher in
blood collected by dermal puncture than in
venipuncture:
glucose
potassium
total protein
calcium
A test included in a newborn screen that is
collected using filter paper is:
PKU
electrolytes
bilirubin
CBC
Failure to puncture across the fingerprint will
cause:
blood to run down the finger
hemolysis
contamination of the sample
additional patient discomfort
The maximum length of a puncture device used
on the heel is:
1.0 mm
1.5 mm
2.0 mm
2.5 mm
Capillary puncture supplies include all of the
following except:
Gauze pad
Lancet
Microcollection device
Povidone–iodine pad
Which of the following is the least hazardous
area of an infant’s foot for capillary puncture?
Central area of the heel
Lateral plantar heel surface
Medial area of the arch
Posterior curvature of the heel
Which of the following conditions disqualifies a
site for capillary puncture?
Cyanotic
Edematous
Swollen
All of the choices
If using capillary puncture to collect the following microtubes from a patient, which one would be collected fi rst?
Gray top
Green top
Purple top
Red top
