Blood sample collection
09 Sep 2025
VenousClinic
- Collector
- Participant
- Device type
- —
- Analytes
- 6
Overview
Key participant information
Participant code
COMFORT-001
Enrollment date
02 Sep 2025
Clinical site
Vall d’Hebron
Enrollment place
Hospital
Enrolled part
AB
Status
Completed
Study Population Cohort
Colorectal cancer
QUESTIONNAIRE
Complete
Study Visits
Details of participatnt visits in Part A and/or Part B
| Date | Part | Type of visit | Place | Status | Comments |
|---|---|---|---|---|---|
| 02 Sep 2025 | A | Screening | Hospital | Completed | Screening visit completed. Eligibility confirmed. |
| 09 Sep 2025 | A | 1st Visit | Hospital | Completed | Baseline visit completed. Sample collection performed at clinical site. |
| 30 Sep 2025 | A | 2nd Visit | Not applicable (N/A) | Completed | Ad-hoc follow-up visit. |
| 21 Oct 2025 | A | 3rd Visit | Not applicable (N/A) | Completed | Ad-hoc follow-up visit. |
| 11 Nov 2025 | B | 1st Visit | Not applicable (N/A) | Completed | Follow-up visit completed. Capillary microsampling at home. |
| 02 Dec 2025 | B | 2nd Visit | Hospital | Completed | Ad-hoc follow-up visit. |
Collections
Blood microsampling and venipuncture collections with associated analyte results
A
Blood sample collection
30 Sep 2025
VenousClinic
- Collector
- Phlebotomist
- Device type
- —
- Analytes
- 5
Blood sample collection
21 Oct 2025
CapillaryClinic
- Collector
- Participant
- Device type
- Greiner MiniCollect EDTA
- Analytes
- 6
Blood sample collection
11 Nov 2025
VenousClinic
- Collector
- Participant
- Device type
- —
- Analytes
- 5
Blood sample collection
02 Dec 2025
CapillaryHome
- Collector
- Phlebotomist
- Device type
- Capitainer B
- Analytes
- 3
| Collection | Collection type | Collection place | Collector | Device type | Part | Analytes | Action |
|---|---|---|---|---|---|---|---|
Blood sample collection Details 09 Sep 2025 | Venous | Clinic | Participant | — | A | 6 | Open |
Blood sample collection Details 30 Sep 2025 | Venous | Clinic | Phlebotomist | — | A | 5 | Open |
Blood sample collection Details 21 Oct 2025 | Capillary | Clinic | Participant | Greiner MiniCollect EDTA | A | 6 | Open |
Blood sample collection Details 11 Nov 2025 | Venous | Clinic | Participant | — | B | 5 | Open |
Blood sample collection Details 02 Dec 2025 | Capillary | Home | Phlebotomist | Capitainer B | B | 3 | Open |
Adverse Events
Reported adverse events during the study
| Date | Part | Visit | Severity | Device related | Action |
|---|---|---|---|---|---|
| 21 Sep 2025 | A | Not applicable | Moderate | Confirmed |
Medical profile
Past medical history and conditions
Coming soon
Past medical history, conditions, medications and allergies will appear here once the ETL feed is connected.
Usability Questionnaire
Participant responses — surveyed on 2025-10-13
| SECTION | Q # | Question | Answer | Comments / Free-text |
|---|---|---|---|---|
| A. Previous Experience with Microsampling | A1 | Had you heard about blood microsampling before this study? | Yes | — |
| A. Previous Experience with Microsampling | A2 | Name of the microsampling device previously known | Not answered | — |
| A. Previous Experience with Microsampling | A3 | Number of previous uses | 1-2 | — |
| A. Previous Experience with Microsampling | A4 | Ease of previous use | Neutral | — |
| A. Previous Experience with Microsampling | A5 | Previous difficulties experienced | Not answered | — |
| B. Study Information and Visit Experience | B1 | Study information was easy to understand | Not answered | — |
| B. Study Information and Visit Experience | B2 | I felt comfortable asking questions about the study | Disagree | — |
| B. Study Information and Visit Experience | B3 | Satisfaction with study visit organisation | Dissatisfied | — |
| B. Study Information and Visit Experience | B4 | Convenience of visit scheduling | Satisfied | — |
| B. Study Information and Visit Experience | B5 | Study staff treated me respectfully | Agree | — |
| B. Study Information and Visit Experience | B6 | I felt comfortable asking questions during the visit | Strongly disagree | — |
| B. Study Information and Visit Experience | B7 | Satisfaction with answers received | Satisfied | — |
| B. Study Information and Visit Experience | B8 | Visit duration was acceptable | Disagree | — |
| B. Study Information and Visit Experience | B9 | Impact on daily life was acceptable | Disagree | — |
| B. Study Information and Visit Experience | B10 | I felt comfortable providing feedback on sampling preferences | Strongly disagree | — |
| C. Conventional Sampling vs Microsampling Experience | C1 | Pain rating for conventional venous blood sampling (0-10) | 5 | — |
| C. Conventional Sampling vs Microsampling Experience | C2 | Pain rating for microsampling device collection (0-10) | 1 | — |
| C. Conventional Sampling vs Microsampling Experience | C3 | Preferred blood collection method if given a choice | Conventional blood sampling | — |
| C. Conventional Sampling vs Microsampling Experience | C4 | Why did you choose this preferred method? | I am used to venous sampling and trust the technique more. | — |
| D. Microsampling Device Experience | D1 | The device seemed easy to use | Neutral | — |
| D. Microsampling Device Experience | D2 | The device caused little or no pain | Strongly agree | — |
| D. Microsampling Device Experience | D3 | I could use the device at home | Strongly disagree | — |
| D. Microsampling Device Experience | D4 | Confidence that microsampling could replace conventional blood sampling | Not answered | — |
| D. Microsampling Device Experience | D5 | Problems experienced with the device | Device error, Other | — |
| E. Home / Self-Collection Experience | E1 | Did you take part in Part A (home self-collection)? | No | — |
| E. Home / Self-Collection Experience | E2 | Satisfaction with microsampling equipment and materials | Very dissatisfied | — |
| E. Home / Self-Collection Experience | E3 | Helpfulness of training materials | Helpful | — |
| E. Home / Self-Collection Experience | E4 | Confidence using microsampling for self-collection | Disagree | — |
| E. Home / Self-Collection Experience | E5 | Self-collection instructions were clear | Strongly disagree | — |
| E. Home / Self-Collection Experience | E6 | I was able to complete sample collection without help | Strongly agree | — |
| E. Home / Self-Collection Experience | E7 | I had access to support during self-collection | Strongly disagree | — |
| E. Home / Self-Collection Experience | E8 | Time required for collecting and returning samples was acceptable | Strongly agree | — |
| E. Home / Self-Collection Experience | E9 | Microsampling fitted into my usual routine | Agree | — |
| E. Home / Self-Collection Experience | E10 | I felt safe and confident during self-collection | Disagree | — |
| E. Home / Self-Collection Experience | E11 | Satisfaction with shipping samples back to the lab | Very satisfied | — |
| F. Training and Support | F1 | Which support types were helpful? | Other, Video tutorial, Printed instructions | — |
| F. Training and Support | F2 | Which factors would build your confidence in using microsampling? | Doctor recommendation | — |
| G. Future Preferences | G1 | Preferred future blood collection location | At home | — |
| G. Future Preferences | G2 | Willingness to use a microsampling device at home for regular health-related blood sampling | Maybe | Would prefer if I had ongoing support. |
| G. Future Preferences | G3 | If you answered Maybe or No, please explain | Not answered | — |
Legal
Consent and withdrawal information
Date of consent
30 Aug 2025
Date of withdrawal
—
Withdraw reason
—