What Is CC?

What Is CC (Board Certification in Clinical Chemistry)?

CC stands for Board Certification in Clinical Chemistry, a credential granted by the American Board of Clinical Chemistry (ABCC) to doctoral-level scientists who demonstrate mastery of clinical chemistry theory, laboratory practice, and case-based problem solving. It is not an entry-level lab certification - it is a rigorous, doctorate-gated credential built for professionals who already hold advanced degrees and years of postdoctoral laboratory experience.

Because several unrelated credentials also use the initials "CC," it's worth being precise: this article, and every resource linked below, refers specifically to Board Certification in Clinical Chemistry through the ABCC. If you landed here searching for a general definition, our companion pieces on What Is CC?, CC Meaning, What Does CC Stand For?, and What Does CC Mean? walk through the terminology in more depth, while What Is A CC? and What Is CC Certification? cover the credential itself from different angles.

Who Administers the Exam and Why It Matters

The ABCC develops, scores, and governs the CC credential, and testing is delivered through Kryterion testing centers. This matters because the ABCC's ownership of the exam content directly shapes everything downstream: eligibility rules, the three-year attempt window, the two-attempt-per-part limit, and the continuing education requirements needed to keep the DABCC designation active once earned.

Unlike broad "certificate of completion" programs, CC is a peer-governed board certification. That distinction affects how employers view it and why passing carries weight on a laboratory director's or senior scientist's resume. For a deeper look at how the credential itself is structured, see CC Certification.

Exam Format: Part A and Part B

The CC exam is split into two distinct parts, each testing a different skill set and each requiring a separate $200 fee:

• Part A - Calculations and Problem Solving: 30 five-option multiple-choice questions administered in three hours. This part emphasizes quantitative reasoning - dilution math, statistical calculations, and analytical problem solving under time pressure.
• Part B - Analytical and Clinical Issues: 140 five-option multiple-choice questions administered in three and one-half hours. This is by far the larger portion of the exam, carrying 140 of the total 170 questions across both parts.

Since February 2026, both parts have been delivered in person, and there are no prescheduled breaks during either session - a scheduling detail candidates need to plan around, especially for the longer Part B sitting. Candidates must pass both parts within a three-year eligibility period, and each part may be attempted no more than twice. If you fail a part twice within that window, you'll need to re-establish eligibility before trying again, which makes first-attempt preparation especially valuable.

For a full breakdown of scoring thresholds and what "passing" actually requires numerically, read CC Passing Score 2026: Exactly What You Need to Pass. For scheduling logistics around testing windows and deadlines, see CC Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

The Seven Knowledge Domains

The ABCC organizes CC content around seven official knowledge areas. These domains provide the broad framework tested across both Part A and Part B, though the balance of questions leans heavily toward the analytical and clinical content covered in Part B.

For a much deeper walkthrough of each domain with sample topics and weighting guidance, see CC Exam Domains 2026: Complete Guide to All 7 Content Areas.

Eligibility Requirements

Standard eligibility for CC is doctorate-gated and experience-heavy. To sit for the exam, candidates generally need:

• An accepted doctoral degree
• At least 30 semester hours of qualifying coursework
• Five years of postdoctoral professional experience in an approved clinical-laboratory setting
• Three professional references

Candidates who complete an accredited fellowship, or who qualify through an alternate-board pathway, may be eligible for a shortened experience requirement. Because these pathways involve specific documentation and timing rules, it's worth reviewing the full eligibility breakdown in CC Requirements 2026: Eligibility, Prerequisites & How to Qualify before you submit an application.

Fees and Registration Mechanics

CC's fee structure has three components:

Because the application fee is nonrefundable and each part requires its own $200 payment, retakes add up quickly if you're not prepared going in. For a complete breakdown of every cost scenario, including retake math, read CC Certification Cost 2026: Complete Pricing Breakdown.

Pass Rates and What They Mean for You

The ABCC publishes average cumulative five-year pass rates of 53% for Part A and 55% for Part B. These figures reflect cumulative outcomes across the full three-year eligibility window and multiple attempts, not single-sitting first-try results - so they shouldn't be read as "roughly half of candidates fail on their first try." Still, the numbers make clear that CC is not a rubber-stamp exam, particularly given the two-attempt limit per part.

For a full statistical breakdown and historical context, see CC Pass Rate 2026: What the Data Shows, and for an honest assessment of exam difficulty relative to the coursework and experience most candidates bring, read How Hard Is the CC Exam? Complete Difficulty Guide 2026.

Who Pursues CC and Where They Work

CC candidates are typically PhD-level clinical chemists, laboratory scientists, or postdoctoral fellows working toward or already in senior laboratory roles - often clinical laboratory director positions, technical supervisor roles, or research and development positions within hospital labs, reference laboratories, and diagnostics companies. Because the credential requires five years of postdoctoral experience (absent a fellowship or alternate-board shortcut), most candidates are mid-career professionals rather than recent graduates.

Employers in hospital systems, national reference laboratories, and in-vitro diagnostics manufacturers often look for DABCC status when filling senior technical and directorship roles, since it signals verified competency across the analytical, regulatory, and clinical interpretation skills covered by the seven domains. If you're evaluating whether the credential fits your career trajectory, CC Jobs and CC Salary Guide 2026: Complete Earnings Analysis both explore how the certification connects to hiring and compensation, while Is the CC Certification Worth It? Complete ROI Analysis 2026 weighs the costs against long-term career value.

Building a CC-Specific Prep Plan

Generic study techniques like spaced repetition or timed practice blocks are useful, but they only pay off when mapped to CC's actual structure - specifically, the heavier weighting of Domains 1, 2, and 3 within Part B, and the calculation-heavy nature of Part A.

Given Part B's disproportionate question count, most candidates should devote noticeably more review time to the domains most represented there rather than splitting time evenly across all seven. A structured, week-by-week plan with domain-specific milestones is covered in more detail in CC Study Guide 2026: How to Pass on Your First Attempt, and a condensed, high-yield reference for final review is available in CC Cheat Sheet 2026: One-Page Review of Must-Know Facts. If you're still building foundational familiarity with lab-based exam content before committing to a full study plan, CC Training outlines preparatory coursework options.

Timed practice matters more for CC than for many other credentials because of the strict, unbroken testing sessions introduced with the in-person format. Running full practice sets on our practice test platform under realistic time pressure - three hours for a 30-question Part A simulation, three and a half hours for a 140-question Part B simulation - helps you build the stamina and pacing instincts that reading alone won't develop. Many candidates use timed practice exams specifically to identify which of the seven domains need the most additional review before committing to a testing date.

Maintaining Active Status

Passing both parts earns the DABCC designation, but that status isn't permanent by default. Maintaining active DABCC status requires 50 continuing-education contact hours and a $350 renewal fee every two years. Candidates should factor this ongoing commitment into their long-term planning - certification is the entry point, not the finish line, for staying current in clinical chemistry practice.

Frequently Asked Questions