CNT CLEAN NEEDLE TECHNIQUE
FINAL EXAM 2026/2027 QUESTIONS AND
VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR
1. According to current CNT standards, what is the minimum duration for vigorous hand
scrubbing with soap and water?
A. 5 to 10 seconds
B. 30 to 40 seconds
C. 10 to 20 seconds
D. 60 seconds
Answer: C
Conceptual Explanation: Current CNT guidelines state that hands should be washed for at
least 10 to 20 seconds of vigorous scrubbing to effectively remove transient
microorganisms.
2. Which of the following is considered the most stable bloodborne pathogen, capable of
surviving on environmental surfaces for at least seven days?
A. HIV
B. Hepatitis B (HBV)
,C. Hepatitis C (HCV)
D. Tuberculosis
Answer: B
Conceptual Explanation: HBV is highly resilient and can remain infectious on
environmental surfaces for a week or more at room temperature.
3. What is the primary action a practitioner should take immediately following an accidental
needlestick injury?
A. Apply a strong disinfectant like bleach to the wound
B. Wash the area thoroughly with soap and water
C. Squeeze the wound to induce bleeding
D. Apply a bandage and continue the treatment
Answer: B
Conceptual Explanation: The immediate first aid for a needlestick is to wash the area with
soap and water. Squeezing or using harsh chemicals is not recommended.
4. When setting up a clean field, what is the status of the one-inch border of the field?
A. It is considered part of the clean field
B. It is only clean if covered by a sterile drape
C. It is considered contaminated
, D. It is the only area where used needles can be placed
Answer: C
Conceptual Explanation: In sterile/clean field protocols, the outer one-inch edge of the
field is always considered non-clean/contaminated.
5. Which type of disinfectant is required for cleaning up a blood spill on a non-porous clinic
floor?
A. 70% Isopropyl alcohol
B. An EPA-registered disinfectant effective against HBV and HIV
C. Warm soapy water
D. Distilled white vinegar
Answer: B
Conceptual Explanation: OSHA requires the use of an EPA-registered tuberculocidal
disinfectant or a solution of 1:10 to 1:100 bleach/water for blood spills.
6. At what point must a sharps container be sealed and replaced?
A. When it is 50% full
B. Only when needles begin to protrude from the top
C. Once a week, regardless of volume
D. When it reaches the ‘full’ line or is 3/4 full
FINAL EXAM 2026/2027 QUESTIONS AND
VERIFIED SOLUTIONS LATEST
UPDATE THIS YEAR
1. According to current CNT standards, what is the minimum duration for vigorous hand
scrubbing with soap and water?
A. 5 to 10 seconds
B. 30 to 40 seconds
C. 10 to 20 seconds
D. 60 seconds
Answer: C
Conceptual Explanation: Current CNT guidelines state that hands should be washed for at
least 10 to 20 seconds of vigorous scrubbing to effectively remove transient
microorganisms.
2. Which of the following is considered the most stable bloodborne pathogen, capable of
surviving on environmental surfaces for at least seven days?
A. HIV
B. Hepatitis B (HBV)
,C. Hepatitis C (HCV)
D. Tuberculosis
Answer: B
Conceptual Explanation: HBV is highly resilient and can remain infectious on
environmental surfaces for a week or more at room temperature.
3. What is the primary action a practitioner should take immediately following an accidental
needlestick injury?
A. Apply a strong disinfectant like bleach to the wound
B. Wash the area thoroughly with soap and water
C. Squeeze the wound to induce bleeding
D. Apply a bandage and continue the treatment
Answer: B
Conceptual Explanation: The immediate first aid for a needlestick is to wash the area with
soap and water. Squeezing or using harsh chemicals is not recommended.
4. When setting up a clean field, what is the status of the one-inch border of the field?
A. It is considered part of the clean field
B. It is only clean if covered by a sterile drape
C. It is considered contaminated
, D. It is the only area where used needles can be placed
Answer: C
Conceptual Explanation: In sterile/clean field protocols, the outer one-inch edge of the
field is always considered non-clean/contaminated.
5. Which type of disinfectant is required for cleaning up a blood spill on a non-porous clinic
floor?
A. 70% Isopropyl alcohol
B. An EPA-registered disinfectant effective against HBV and HIV
C. Warm soapy water
D. Distilled white vinegar
Answer: B
Conceptual Explanation: OSHA requires the use of an EPA-registered tuberculocidal
disinfectant or a solution of 1:10 to 1:100 bleach/water for blood spills.
6. At what point must a sharps container be sealed and replaced?
A. When it is 50% full
B. Only when needles begin to protrude from the top
C. Once a week, regardless of volume
D. When it reaches the ‘full’ line or is 3/4 full
