CPC Study Guide 2026

Everything you need to pass the CPC exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📚 CPC Topics to Study (38)

Drug Testing Protocols & Compliance Standards · 9 cardsPrivacy Protection & Ethical Practices · 9 cardsSafety Procedures & Infection Control · 9 cardsSpecimen Collection Procedures & Chain of Custody · 9 cardsDrug Testing Protocols & Compliance Standards · 7 cardsDrug Testing Protocols & Compliance Standards · 7 cardsDrug Testing Protocols & Compliance Standards · 7 cardsDrug Testing Protocols & Compliance Standards · 7 cardsObserved & Monitored Collections · 7 cardsObserved & Monitored Collections · 7 cardsObserved & Monitored Collections · 7 cardsPrivacy Protection & Ethical Practices · 7 cardsPrivacy Protection & Ethical Practices · 7 cardsPrivacy Protection & Ethical Practices · 7 cardsPrivacy Protection & Ethical Practices · 7 cardsSafety Procedures & Infection Control · 7 cardsSafety Procedures & Infection Control · 7 cardsSafety Procedures & Infection Control · 7 cardsSafety Procedures & Infection Control · 7 cardsSpecimen Collection Procedures & Chain of Custody · 7 cardsSpecimen Collection Procedures & Chain of Custody · 7 cardsSpecimen Collection Procedures & Chain of Custody · 7 cardsSpecimen Collection Procedures & Chain of Custody · 7 cardsCPC Adulteration & Specimen Validity Testing · 6 cardsCPC Adulteration & Specimen Validity Testing · 6 cardsCPC Adulteration & Specimen Validity Testing · 6 cardsCPC Documentation & Reporting Requirements · 6 cardsCPC Documentation & Reporting Requirements · 6 cardsCPC Documentation & Reporting Requirements · 6 cardsCPC Donor Identification & Verification · 6 cards

✍️ Sample CPC Questions & Answers

1. A donor requests a copy of the CCF after providing a specimen. The collector should:
Provide Copy 5 (the donor copy) immediately

Copy 5 of the Federal CCF is designated as the donor's copy and must be given to the donor at the time of collection.

2. Under DOT Part 40, direct observed collection is required for which specific test category?
Follow-up testing ordered by a Substance Abuse Professional (SAP)

Follow-up tests ordered by a SAP after return-to-duty always require direct observation under DOT Part 40.

3. What is the purpose of a 'return-to-duty' drug test under DOT regulations?
To ensure a safety-sensitive employee who tested positive has tested negative before returning to safety-sensitive duties

A return-to-duty test confirms that an employee who previously violated drug testing rules is now drug-free before resuming safety-sensitive functions.

4. A collector must discard an insufficient specimen (shy bladder) if the donor cannot provide 30 mL after a waiting period of:
3 hours

If a donor cannot provide 30 mL within 3 hours of the first attempt, the collection is discontinued under DOT Part 40.

5. Which of the following substances is a common adulterant that some donors attempt to use to invalidate a drug test?
Bleach or oxidizing agents introduced into the specimen cup

Bleach and oxidizing agents are introduced into the specimen by the donor to destroy drug metabolites, and the laboratory's validity tests are designed to detect these substances.

6. When can donor information be shared?
Only with authorized individuals

Donor information can only be shared with authorized individuals, typically those with a legitimate need-to-know as defined by regulations (e.g., DOT) or explicit donor consent. This includes the employer's Designated Employer Representative (DER) and the Medical Review Officer (MRO). Sharing information with unauthorized parties, such as family members or coworkers, is a breach of confidentiality and privacy laws.

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