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Clinical & Trials [Clinical Evidence](/ecosystems/clinical-evidence)CRF 

# Case Report Form

Structured paper or electronic forms used to capture protocol-required data for each enrolled subject.

Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 9, 2026 

## Definition

A Case Report Form (CRF) is the structured instrument, paper or, almost universally now, electronic (eCRF) within an  [Electronic Data Capture](/terms/edc) (EDC) system, used to record protocol-required data for each enrolled subject. CRF design follows the Statistical Analysis Plan and CDISC CDASH standards so that data captured maps cleanly to SDTM datasets for regulatory submission. 

What the regulation says

FDA 21 CFR Part 11 (electronic records and signatures), ICH E6(R3)  [GCP](/terms/gcp), and CDISC standards (CDASH for collection, SDTM for submission). FDA requires SDTM for NDA/BLA and increasingly for device  [PMA](/terms/pma) submissions. 

## What this means in practice

CRF design is one of the highest-leverage activities in trial planning, a poorly designed CRF generates queries, slows database lock, and impairs analysis. Source-data verification ( [SDV](/terms/sdv)) practices have shifted toward  [risk-based monitoring](/terms/risk-based-monitoring) rather than 100% SDV. 

Common pitfalls

-   • Letting clinical operations design the CRF without statistician and data-management input. 
-   • Capturing free-text where coded fields would suffice, generates downstream cleaning burden. 

## Related terms

Grouped by theme 

### Editor's picks

· Hand-selected related concepts 

[

Clinical & Trials

ALCOA+

Data integrity principles: Attributable, Legible, Contemporaneous, Original, Accurate (plus Complete, Consistent, Enduring, Available).





](/terms/alcoa-plus)[

Clinical & Trials

ICH E6 Good Clinical Practice(GCP) 

International standard for the design, conduct, and reporting of clinical trials.





](/terms/ich-gcp)[

Clinical & Trials

Source Data Verification(SDV) 

Process of comparing data in case report forms against original source records.





](/terms/sdv)[

Clinical & Trials

Trial Master File(TMF) 

The collection of essential documents that demonstrates the conduct of a clinical trial complies with GCP and applicable regulatory requirements.





](/terms/trial-master-file)

### More in Clinical & Trials

· Same category 

[

Clinical & Trials

Adaptive Trial Design

Trial design that pre-specifies opportunities to modify aspects (sample size, arms, endpoints) based on interim data.





](/terms/adaptive-trial)[

Clinical & Trials

Adverse Event(AE) 

Any untoward medical occurrence in a subject, whether or not related to the device.





](/terms/adverse-event)[

Clinical & Trials

Analytical Sensitivity

An IVD's ability to detect small quantities of an analyte.





](/terms/analytical-sensitivity)[

Clinical & Trials

Bayesian Trial Design

Trial design that uses Bayesian statistics, often incorporating prior data from related studies or registries.





](/terms/bayesian-trial)

Cited by

Where this term appears across MedTech Terms.

Ecosystems (1)

-   [Clinical Evidence](/ecosystems/clinical-evidence)

## Primary references

3 sources 

Link health:  3 verified · last checked 2026-06-20 

CDISC· 1 eCFR· 1 NIH· 1 

1.  [1 
    
    CDISC Standards
    
    Verified 
    
    CDISC · cdisc.org 
    
    
    
    ](https://www.cdisc.org/standards)
2.  [2 
    
    FDA 21 CFR Part 11
    
    Verified 
    
    eCFR · ecfr.gov 
    
    
    
    ](https://www.ecfr.gov/current/title-21/chapter-I/subchapter-A/part-11)
3.  [3 
    
    ClinicalTrials.gov
    
    Verified 
    
    NIH · clinicaltrials.gov 
    
    
    
    ](https://clinicaltrials.gov/)

Inline markers like \[1\]  jump to the matching reference above.

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On this term

Category

Clinical & Trials

Acronym

CRF

Sources

3

Updated

5/9/2026

[Compare with another term](/compare?a=case-report-form)

Learn in 60 seconds

Card Lesson Quiz

Structured paper or electronic forms used to capture protocol-required data for each enrolled subject.

-   · CRF design is one of the highest-leverage activities in trial planning, a poorly designed CRF generates queries, slows database lock, and impairs analysis. 
-   · Source-data verification (SDV) practices have shifted toward risk-based monitoring rather than 100% SDV. 
-   · CRF design follows the Statistical Analysis Plan and CDISC CDASH standards so that data captured maps cleanly to SDTM datasets for regulatory submission. 

Remember this

Watch out: Letting clinical operations design the CRF without statistician and data-management input.

Related terms

-   [ICH E6 Good Clinical Practice(GCP) ](/terms/ich-gcp)
-   [ALCOA+ ](/terms/alcoa-plus)
-   [Source Data Verification(SDV) ](/terms/sdv)
-   [Trial Master File(TMF) ](/terms/trial-master-file)

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