CLC Study Guide 2026
Everything you need to pass the CLC 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.
📋 CLC Exam Format at a Glance
📚 CLC Topics to Study (69)
✍️ Sample CLC Questions & Answers
1. A consultant is assessing whether a laboratory's automated slide stainer for Gram stains is performing consistently. Which control material is MOST appropriate for daily monitoring?
Slides prepared from reference gram-positive and gram-negative organisms verify that the stainer produces correct differential staining and that decolorization is neither under- nor over-performed.
2. When calculating the predictive value of a positive test result in a low-prevalence population, which phenomenon must a CLC account for?
In low-prevalence populations, even highly sensitive and specific tests yield a low positive predictive value (PPV) because false positives outnumber true positives.
3. The OIG Work Plan is a valuable compliance tool for laboratory consultants primarily because it:
The OIG Work Plan describes planned and ongoing reviews, audits, and investigations, alerting laboratories to the compliance risk areas receiving current government attention.
4. How should CLC professionals measure success in advanced professional practice?
Success in advanced professional practice is measured through defined metrics and benchmarks, with regular evaluation against established professional goals.
5. Analyzing 'send-out' (reference laboratory) test costs is most useful for a laboratory consultant to:
Send-out analysis by test, volume, and aggregate spend reveals candidates for in-sourcing where volume would support capital investment and reduce turnaround time while improving margins.
6. An effective laboratory compliance program, as outlined in OIG guidance, must include:
The OIG's seven elements of an effective compliance program include written standards, a compliance officer, training, communication channels, auditing, discipline enforcement, and corrective action procedures.