ACRP-PI Domain 5: Study and Site Management (17%) - Complete Study Guide 2026

What Domain 5 Actually Tests

Study and Site Management is the operational backbone of a principal investigator's daily work. At 17% of the exam, it represents approximately 21 scored questions out of the 125 total items on the ACRP-PI exam - though not every question you see is scored, since some items are unscored pretest questions embedded throughout. The exam allocates 180 minutes total and requires a scaled score of 600 to pass.

What separates Domain 5 from the adjacent Domain 4: Clinical Trial Operations is focus: while Domain 4 tests how a trial is conducted (protocol adherence, visit procedures, adverse event workflows), Domain 5 tests how the site is organized and managed to make that conduct possible. Think of it as the infrastructure layer - staff roles, file systems, sponsor relationships, vendor oversight, and the administrative machinery that keeps a site inspection-ready.

This distinction matters because candidates often blend the two domains during preparation and end up under-studying site administration topics. The exam will specifically probe your knowledge of delegation structures, essential document maintenance, and how the PI exercises supervisory authority over the entire site team.

Breaking Down the 17%: Topic Areas Inside Domain 5

The 2024 CPI Exam Content Outline groups Domain 5 content around several interconnected responsibilities. While the outline does not publish sub-weights for individual topics, experienced candidates and instructors consistently identify the following as the highest-yield areas:

Sponsor-Site Relationship and Oversight Responsibilities

The PI as the Responsible Party

A recurring exam theme in Domain 5 is that the PI retains ultimate responsibility for site conduct even when tasks are delegated. ICH E6 makes clear that a sponsor may appoint a CRO to perform trial-related duties, but the PI's obligation to ensure quality at the site level is non-delegable in its totality. Questions often present scenarios where a monitor identifies a finding - the exam tests whether the candidate understands that the PI, not the study coordinator, owns the corrective action response.

Sponsor monitoring visits are a specific sub-topic. You should know what triggers an escalation from routine monitoring to a for-cause visit, what documentation the PI must provide during a visit, and how the PI should respond to a monitoring report that flags deviations. Under E6(R3), sponsors are expected to apply risk-based monitoring approaches, which means site visits may be less frequent but queries and remote monitoring more intense - the PI's documentation discipline becomes even more critical.

Clinical Trial Agreements and Financial Considerations

The PI's role in reviewing and executing the clinical trial agreement (CTA) is testable. Candidates should understand the general categories of what a CTA governs - payment schedules, publication rights, indemnification, and intellectual property - and how the PI balances these institutional agreements with their independent scientific and ethical obligations. The exam does not require legal expertise but does test whether the PI understands what they are accountable for within a signed agreement.

Staff Delegation, Training, and the Delegation of Authority Log

The Delegation of Authority log is arguably the single most examined document in Domain 5. The DoA log records which study tasks have been formally assigned to which qualified team members, and it must be signed and dated by the PI. Every person performing a protocol-specific task must appear on the DoA log before performing that task - not after.

The exam tests several practical failure modes here:

• A staff member performs a task not listed on the DoA log - what should happen?
• A new coordinator joins mid-study - when can they begin protocol activities?
• A staff member's professional license expires - does their delegation remain valid?
• The Sub-Investigator leaves the site - what document updates are required?

Staff training records are closely related. The PI is responsible for ensuring that every delegated team member has documented training on the protocol, GCP, and any amended procedures before they perform delegated tasks. Under E6(R3)'s quality management emphasis, expect questions to test whether training verification is prospective (completed before the task) rather than retrospective.

Essential Regulatory Document Files and TMF Management

What the TMF Contains and Why It Matters

ICH E6 Section 8 defines the essential documents that must be maintained in the Trial Master File, and the ACRP-PI exam tests this content extensively across multiple domains - but Domain 5 specifically focuses on the site's operational responsibility for maintaining and updating these documents throughout the trial lifecycle. The site's portion of the TMF (sometimes called the Investigator Site File or ISF) must be available for inspection at any time.

High-frequency document types tested in this domain include:

• Investigator's Brochure versions and update receipts
• IRB/IEC approvals and correspondence
• Signed protocol and amendments
• Regulatory authority notifications and approvals
• Laboratory reference ranges and normal value certifications
• Signed informed consent forms (blank versions for the file; signed originals in subject records)
• CVs and medical licenses for all investigators
• Financial disclosure forms
• The signed clinical trial agreement

Document Lifecycle and Archiving

Domain 5 also tests what happens to the TMF at closeout. Documents must be archived for the period specified by applicable regulations and the sponsor's requirements - ICH E6 generally references a minimum of 15 years for investigational product accountability records, though country-specific rules vary. Since this is an ICH-only exam (not country-specific), focus on ICH E6 archiving principles rather than any single national standard. Understand when documents can be destroyed, who authorizes destruction, and what the PI must do if the site closes or changes ownership before the retention period expires.

Vendor and CRO Oversight at the Site Level

A frequently underestimated Domain 5 topic is the PI's responsibility for external vendors. Central laboratories, specialty pharmacies, imaging reading centers, and electronic patient-reported outcome vendors all operate at the direction of the sponsor, but the PI at the site is responsible for ensuring that local procedures interface correctly with vendor requirements and that any vendor-related deviations are documented and reported appropriately.

Exam questions in this area typically test the PI's awareness of: who is responsible when a central lab loses a sample (the site's specimen handling SOP is the point of investigation), how the PI communicates specimen handling problems to the sponsor, and what oversight the PI exercises over an unblinded pharmacist dispensing investigational product at the site.

Study Initiation, Ongoing Conduct, and Closeout Procedures

Site Qualification and Initiation

Before a single subject is enrolled, the PI must demonstrate that the site is adequately resourced. Domain 5 tests the PI's role in site qualification visits (SQVs), site initiation visits (SIVs), and the pre-study documentation exchange. At an SQV, the sponsor assesses facilities, equipment, staff, and subject population access. At an SIV, the PI and staff receive protocol-specific training. The PI's obligation at this stage is to ensure staff are trained and that all pre-study essential documents are in place before enrollment begins.

Ongoing Site Management Obligations

During the trial, the PI must maintain active oversight rather than a passive administrative role. This includes reviewing monitoring visit reports within required timeframes, implementing corrective and preventive actions (CAPAs) for identified findings, and ensuring that protocol amendments are implemented only after appropriate IRB approval and sponsor authorization - not before.

Closeout and Archiving

Study closeout is a distinct phase the exam treats carefully. The PI must ensure that all subjects have completed or discontinued participation, all outstanding queries are resolved, investigational product is reconciled and returned or destroyed per protocol, and the TMF is complete and transferred to the archive. The exam may test what happens when a subject is lost to follow-up at closeout - the PI cannot simply close the record without documented attempts to contact and assess subject safety.

How Domain 5 Questions Are Framed on the Exam

The 125-question exam uses exclusively multiple-choice format, and Domain 5 items are heavily scenario-based. You will rarely see a pure definitional question like "What is a TMF?" Instead, expect questions that place you in a situation as the PI and ask you to select the most appropriate action, identify the error in a described workflow, or determine what document is missing from a described scenario.

A typical Domain 5 item might read: "During a monitoring visit, the monitor notes that two study coordinators performed informed consent discussions but are not listed on the current Delegation of Authority log. As the PI, what is your immediate action?" The correct answer requires you to understand both the DoA log requirement and the PI's responsibility to retroactively assess whether a protocol deviation occurred - and document it accordingly.

Preparation through realistic scenario practice is essential. Our ACRP-PI practice test platform includes domain-tagged questions specifically mapped to Domain 5 content so you can identify whether your weak spots are in delegation, TMF management, or closeout procedures. For a broader view of question difficulty and style, see our guide on what to expect from ACRP-PI practice questions in 2026.

Targeted Preparation Strategy for Domain 5

Domain 5 rewards candidates who reflect systematically on their own site management experience. Before drilling practice questions, spend time mapping your actual work history against the domain topic clusters listed earlier in this article. Where you have direct, daily experience - delegation logs, monitoring visit prep, IRB correspondence - your recall will be strong. Where you have less exposure (perhaps vendor oversight or study closeout if you work at an early-phase site), those gaps need explicit study time.

If you are still deciding how to allocate your total study time across all six domains, the complete ACRP-PI Study Guide for 2026 provides a full domain-by-domain preparation framework, including how to weight your hours against each domain's exam percentage. And for a full view of how Domain 5 fits alongside the other five content areas, review the ACRP-PI Exam Domains 2026 overview.

When you are ready to assess your knowledge under timed conditions, take a free practice test on our platform and filter results by Domain 5 to get a precise gap analysis before your exam date.

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