Blood sample collection
10 Sep 2025
VenousClinic
- Collector
- Phlebotomist
- Device type
- —
- Analytes
- 4
Overview
Key participant information
Participant code
COMFORT-050
Enrollment date
03 Sep 2025
Clinical site
Institut Pasteur
Enrollment place
Hospital
Enrolled part
AB
Status
Withdrawn
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 |
|---|---|---|---|---|---|
| 03 Sep 2025 | A | Screening | Hospital | Withdrawn | Screening visit completed. Eligibility confirmed. |
| 10 Sep 2025 | A | 1st Visit | Hospital | Withdrawn | Baseline visit completed. Sample collection performed at clinical site. |
| 01 Oct 2025 | A | 2nd Visit | Not applicable (N/A) | Withdrawn | Ad-hoc follow-up visit. |
| 22 Oct 2025 | B | 1st Visit | Not applicable (N/A) | Withdrawn | Follow-up visit completed. Capillary microsampling at home. |
Collections
Blood microsampling and venipuncture collections with associated analyte results
A
Blood sample collection
01 Oct 2025
CapillaryHome
- Collector
- Phlebotomist
- Device type
- Whatman 903 PSC
- Analytes
- 6
Blood sample collection
22 Oct 2025
VenousClinic
- Collector
- Phlebotomist
- Device type
- —
- Analytes
- 6
| Collection | Collection type | Collection place | Collector | Device type | Part | Analytes | Action |
|---|---|---|---|---|---|---|---|
Blood sample collection Details 10 Sep 2025 | Venous | Clinic | Phlebotomist | — | A | 4 | Open |
Blood sample collection Details 01 Oct 2025 | Capillary | Home | Phlebotomist | Whatman 903 PSC | A | 6 | Open |
Blood sample collection Details 22 Oct 2025 | Venous | Clinic | Phlebotomist | — | B | 6 | Open |
Adverse Events
Reported adverse events during the study
No adverse events reported
This participant has no adverse events recorded during the study.
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 2025-09-23
| SECTION | Q # | Question | Answer | Comments / Free-text |
|---|---|---|---|---|
| A. Previous Experience with Microsampling | A1 | Had you heard about blood microsampling before this study? | No | — |
| 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 | Not answered | — |
| A. Previous Experience with Microsampling | A4 | Ease of previous use | Not answered | — |
| A. Previous Experience with Microsampling | A5 | Previous difficulties experienced | Not answered | — |
| B. Study Information and Visit Experience | B1 | Study information was easy to understand | Neutral | — |
| B. Study Information and Visit Experience | B2 | I felt comfortable asking questions about the study | Agree | — |
| B. Study Information and Visit Experience | B3 | Satisfaction with study visit organisation | Very satisfied | — |
| B. Study Information and Visit Experience | B4 | Convenience of visit scheduling | Satisfied | — |
| B. Study Information and Visit Experience | B5 | Study staff treated me respectfully | Strongly disagree | — |
| B. Study Information and Visit Experience | B6 | I felt comfortable asking questions during the visit | Agree | — |
| B. Study Information and Visit Experience | B7 | Satisfaction with answers received | Dissatisfied | — |
| B. Study Information and Visit Experience | B8 | Visit duration was acceptable | Agree | — |
| B. Study Information and Visit Experience | B9 | Impact on daily life was acceptable | Strongly agree | — |
| 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) | 2 | — |
| 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 | No preference | — |
| C. Conventional Sampling vs Microsampling Experience | C4 | Why did you choose this preferred method? | Both methods felt similar to me; convenience matters more. | — |
| D. Microsampling Device Experience | D1 | The device seemed easy to use | Strongly disagree | — |
| D. Microsampling Device Experience | D2 | The device caused little or no pain | Disagree | — |
| D. Microsampling Device Experience | D3 | I could use the device at home | Neutral | — |
| D. Microsampling Device Experience | D4 | Confidence that microsampling could replace conventional blood sampling | Strongly disagree | — |
| D. Microsampling Device Experience | D5 | Problems experienced with the device | Not answered | — |
| 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 satisfied | — |
| E. Home / Self-Collection Experience | E3 | Helpfulness of training materials | Very unhelpful | — |
| E. Home / Self-Collection Experience | E4 | Confidence using microsampling for self-collection | Strongly agree | — |
| E. Home / Self-Collection Experience | E5 | Self-collection instructions were clear | 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 | Disagree | — |
| 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 | Strongly agree | — |
| E. Home / Self-Collection Experience | E11 | Satisfaction with shipping samples back to the lab | Satisfied | — |
| F. Training and Support | F1 | Which support types were helpful? | Printed instructions, In-person explanation, Video tutorial | — |
| F. Training and Support | F2 | Which factors would build your confidence in using microsampling? | Tutorial videos, 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 | Not answered | — |
| G. Future Preferences | G3 | If you answered Maybe or No, please explain | Need to see clear evidence the results are reliable. | — |
Legal
Consent and withdrawal information
Date of consent
31 Aug 2025
Date of withdrawal
02 Nov 2025
Withdraw reason
Relocation outside study area