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The Clean Needle Technique (CNT) Written Exam is
administered by the Council of Colleges of Acupuncture and
Oriental Medicine (CCAOM) and is required for acupuncture
licensure in many states. It is also a component of NCCAOM
certification.
SECTION I: BLOODBORNE PATHOGENS & HEPATITIS
Q1. How long can Hepatitis B (HBV) survive on surfaces at room temperature?
- A) 24 hours
- B) 3 days
- C) at least one week
- D) 30 days
Correct Answer: C – at least one week
Rationale: HBV is highly resilient and can survive on environmental surfaces for at least one week, making it more easily transmitted in clinical settings than HIV.
Q2. What is the risk of infection from exposure to contaminated blood for HBV in healthcare settings?
- A) 0.3%
- B) 10%
- C) 30%
- D) 50%
Correct Answer: C – 30%
Rationale: HBV is over 100 times more concentrated in an infected person's blood than HIV, resulting in a much higher transmission risk from needlestick injuries.
Q3. What is the risk of infection from exposure to contaminated blood for HIV in healthcare settings?
- A) 0.3%
- B) 10%
- C) 30%
- D) 50%
Correct Answer: A – 0.3%
Rationale: HIV transmission risk per needlestick exposure is approximately 0.3%.
Q4. Which type of hepatitis does the CDC recommend acupuncturists and healthcare professionals at risk of exposure get vaccinated for?
- A) Hepatitis A
- B) Hepatitis B
- C) Hepatitis C
- D) Hepatitis D
Correct Answer: B – Hepatitis B
Rationale: An HBV vaccine is available and recommended for all healthcare workers with potential exposure to blood or body fluids.
Q5. Which hepatitis type has no vaccine available?
- A) Hepatitis A
- B) Hepatitis B
- C) Hepatitis C
- D) All of the above
Correct Answer: C – Hepatitis C
Rationale: There is currently no vaccine for Hepatitis C. Transmission is bloodborne, and 75-85% of cases become chronic.
Q6. What is the incubation period for Hepatitis A?
- A) 15-50 days
- B) 45-160 days
- C) 14-180 days
Q10. What is the correct bleach-to-water ratio for cleaning blood or body fluid spills on a smooth surface?
Correct Answer: B – 1:
Rationale: Smooth surfaces can be disinfected with a 1:100 dilution (1/4 cup bleach per gallon of water). Porous surfaces require a 1:10 dilution.
Q11. What is the correct bleach-to-water ratio for cleaning blood or body fluid spills on a porous surface?
Correct Answer: A – 1:
Rationale: Porous surfaces require stronger disinfection with a 1:10 dilution.
Q12. Which test will NOT help confirm a diagnosis of HIV?
- A) ELISA
- B) Western blot
- C) IFA (Immunofluorescence Assay)
- D) ANA (Anti-nuclear antibody)
Correct Answer: D – ANA
Rationale: ANA is used to diagnose autoimmune diseases like lupus, not HIV. ELISA, Western blot, and IFA are used for HIV confirmation.
Q13. Which of the following is NOT an opportunistic infection in an AIDS patient?
- B) Pneumocystis carinii pneumonia
- C) Systemic lupus
- D) Kaposi's sarcoma
Correct Answer: C – Systemic lupus
Rationale: Systemic lupus is an autoimmune disorder, not an opportunistic infection associated with AIDS.
Q14. What is the most reliable source to verify that a sterilizer is working correctly?
- A) Chemical indicators
- B) Biological indicators (spore tests)
- C) Mechanical gauges
- D) Visual inspection
Correct Answer: B – Biological indicators
Rationale: Biological indicators (spore tests) are the most reliable method for confirming sterilization effectiveness.
Q15. Which pathogen is found on the skin and many surfaces and is the primary reason for proper cleaning procedures?
Correct Answer: Staphylococcus
Rationale: Staphylococcus aureus is a common resident bacterium on skin that can cause infections if introduced through needling.
SECTION II: HAND HYGIENE & CLEAN FIELD
Q16. How long should you wash your hands with soap and running water?
- A) 5 seconds
- B) 10 seconds
- C) 20 seconds
- D) 60 seconds
Correct Answer: B – 10 seconds
Q20. What are the five steps of Clean Needle Technique (CNT)?
Correct Answer:
- Wash hands
- Use single-use needles
- Set up a clean field for each patient
- Immediately isolate used sharps
- Follow Standard Precautions
Rationale: These five steps form the foundation of CNT infection control.
Q21. In a group acupuncture setting, is it acceptable to collect used needles in a central container and place them in sharps disposal after patients leave?
- A) Yes, if gloves are worn
- B) Yes, if done within 30 minutes
- C) No, used needles must be immediately placed in a sharps container
- D) No, used needles cannot be collected centrally
Correct Answer: C – No
Rationale: Used needles must be immediately placed in a sharps container at the point of care, not stored in open containers.
Q22. True or False: It is acceptable to use the same guide tube for multiple points on the same patient during one visit.
Correct Answer: A – True
Rationale: Guide tubes may be reused for multiple points on the same patient during a single treatment session, provided proper technique is used.
Q23. What type of microorganism does regular soap clean?
- A) Resident
- B) Transient
- C) Spores
- D) Viruses
Correct Answer: B – Transient
Rationale: Regular soap removes transient microorganisms picked up from surfaces or patients; resident bacteria lodge deeper in the skin.
Q24. What is the difference between resident and transient infectious agents?
Correct Answer: Resident agents (e.g., staphylococcus) lodge deeper in skin layers; transient agents are picked up from one patient and may be carried to another.
Q25. True or False: Visitors or salespeople should be allowed to freely move around the clean field and observe treatments.
Correct Answer: False
Rationale: The clean field must be protected from unnecessary contamination; only essential personnel should access the treatment area.
Q26. True or False: Because NADA protocol involves only ear needles, NADA practitioners can skip handwashing or setting up a clean field for each patient when it is not convenient.
Correct Answer: False
Rationale: A clean field must be established for every patient, regardless of treatment type or convenience.
SECTION III: NEEDLE SAFETY & DISPOSAL
Q27. What is the acceptable and safe storage time for needles kept in heat-sealed paper or plastic pouches?
Rationale: Acupuncture needles should never be inserted through broken, diseased, inflamed, or irritated skin.
Q31. If mild bleeding occurs after needle removal, what is the proper response?
- A) Wipe with alcohol swab
- B) Apply direct pressure with a cotton ball for 30 seconds to 1 minute
- C) Apply ice
- D) Ignore as it is normal
Correct Answer: B – Apply direct pressure with a cotton ball for 30 seconds to 1 minute
Rationale: Direct pressure allows natural clotting and prevents hematoma formation.
Q32. True or False: Needle insertion must be performed without the practitioner's hands coming into contact with the shaft of the needle.
Correct Answer: True
Rationale: Only the handle and guide tube should be touched; the shaft should remain sterile.
Q33. How should needles be opened to avoid contamination?
Correct Answer: The part of the packaging touched by fingers must be pulled back to avoid contact with the needle; the needle should be expelled from the sterile pack without touching the shaft.
Q34. What type of container must be used for contaminated needles?
- A) Any plastic container
- B) A commercially available sharps container with a proper sealing lid
- C) A glass jar
- D) A cardboard box
Correct Answer: B – A commercially available sharps container with a proper sealing lid
Rationale: Approved sharps containers are puncture-resistant, leak-proof, and labeled for biohazardous waste.
Q35. True or False: It is best practice to place needles removed from the patient's skin in a stainless steel disposal tray before putting them in the sharps container to ensure an accurate needle count.
Correct Answer: False
Rationale: Needles should be immediately placed in the sharps container at the point of care, not stored in open trays where they may cause injury or contamination.
Q36. What should the practitioner do if they have washed their hands but realize the patient's clothing is blocking a point?
- A) Carefully move the clothing without re-washing
- B) Re-wash hands before palpating or needling
- C) Ask the patient to move the clothing
- D) Proceed if hands were washed within 5 minutes
Correct Answer: B – Re-wash hands before palpating or needling
Rationale: Hands must be washed again before making contact with the patient's skin or clean field.
SECTION IV: PPE & DISINFECTION
Q37. The most extensively used PPE in the acupuncturist's office is:
- A) Face masks
- B) Gloves
- C) Closed-toe shoes
- D) Gowns
Correct Answer: C – Closed-toe shoes
Rationale: 70% isopropyl alcohol is the standard skin preparation agent in acupuncture; chlorhexidine is not typically recommended.
Q42. True or False: In the case of shallow/intradermal needling, you must always clean the skin prior to needle insertion.
Correct Answer: False
Rationale: Intradermal needles are so short that full surface disinfection is not required, though the area should still be clean.
SECTION V: STERILIZATION & GUIDELINES
Q43. What is the definition of sterilization?
Correct Answer: The process of destroying ALL microbial life (including viruses) via sterilants or sterilizing methods.
Q44. What is the definition of disinfection?
Correct Answer: The process that reduces microbial levels but may not eliminate all bacterial spores or viruses.
Q45. True or False: High-level disinfectants are used to disinfect only reusable medical equipment.
Correct Answer: True
Rationale: High-level disinfection is required for semi-critical reusable equipment that contacts mucous membranes or non-intact skin.
Q46. True or False: Standard of care is defined as what a minimally competent clinician in the same field with the same level of training would do in a similar situation.
Correct Answer: True
Rationale: This is the legal definition of standard of care.
Q47. How often should acupuncture needles be sterilized?
- A) After each use
- B) Before each use
- C) After each patient
- D) Acupuncture needles are single-use only and NOT sterilized for reuse
Correct Answer: D – Acupuncture needles are single-use only
Rationale: Modern acupuncture practice mandates sterile, single-use, disposable needles.
Q48. How often do plum blossom (seven-star) needles need to be sterilized?
- A) Never
- B) After each patient
- C) Weekly
- D) Monthly
Correct Answer: B – After each patient
Rationale: Any instrument that contacts the skin or may cause bleeding must be sterilized between patients.
SECTION VI: MOXIBUSTION & CUPPING SAFETY
Q49. True or False: To treat moxa burns from any form of moxibustion, the FIRST step is to cool the burned area with water regardless of where the burn is located.
SECTION VII: PRECAUTIONS & SAFETY
Q53. True or False: Someone taking anticoagulant medications should never be needled because the risk of bleeding is too high.
Correct Answer: False
Rationale: Patients on anticoagulants can be needled with caution; use shallower insertion, avoid vascular areas, and apply longer pressure after needle removal.
Q54. To reduce the risk of pneumothorax, needles inserted at points on the upper back and chest should be:
- A) Inserted perpendicular
- B) Inserted deeply
- C) Inserted obliquely (at an angle)
- D) Avoided completely
Correct Answer: C – Inserted obliquely
Rationale: Oblique insertion reduces the risk of lung puncture in high-risk anatomical areas.
Q55. True or False: Insertion site pain may occur because alcohol was not allowed to dry before needle insertion.
Correct Answer: True
Rationale: Wet alcohol tracks along the needle shaft, causing stinging and pain at the insertion site.
Q56. What does the CDC recommend regarding TB testing for practitioners in high-risk urban clinics?
- A) Once yearly
- B) Every six months
- C) Only if symptoms appear
Correct Answer: B – Every six months
Rationale: The CDC recommends TB testing every 6 months for healthcare workers in high-risk settings.
Q57. What is contraindicated for needling? (Select all that apply)
Correct Answer:
- Excessively elevated blood pressure
- Intoxicated or chemically altered state of patient
- Patient refusal
- Wound at specific insertion site
- Pregnancy (precautions only)
Rationale: These conditions present increased risks and should be carefully evaluated before treatment.
Q58. How long is the latent period for Hepatitis B?
Correct Answer: 7 weeks up to 6 months
Rationale: The latent period for HBV can range from 7 weeks to 6 months.
Q59. How should cups and gua sha tools be prepared before use?
- A) Only rinsed with water
- B) Washed and disinfected before use and re-use
- C) Sterilized after each patient
- D) Used once then discarded
Correct Answer: B – Washed and disinfected before use and re-use
Rationale: Cups and gua sha tools must be washed and disinfected between patients; some clinics use disposable options.
