Blood sample collection
22 Nov 2025
CapillaryClinic
- Collector
- Participant
- Device type
- Greiner MiniCollect EDTA
- Analytes
- 3
Overview
Key participant information
Participant code
COMFORT-022
Enrollment date
15 Nov 2025
Clinical site
Sant Joan de Déu
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 |
|---|---|---|---|---|---|
| 15 Nov 2025 | A | Screening | Hospital | Completed | Screening visit completed. Eligibility confirmed. |
| 22 Nov 2025 | A | 1st Visit | Hospital | Completed | Baseline visit completed. Sample collection performed at clinical site. |
| 13 Dec 2025 | A | 2nd Visit | Hospital | Completed | Ad-hoc follow-up visit. |
| 03 Jan 2026 | B | 1st Visit | Not applicable (N/A) | Completed | Follow-up visit completed. Capillary microsampling at home. |
| 24 Jan 2026 | B | 2nd Visit | Hospital | Completed | Ad-hoc follow-up visit. |
Collections
Blood microsampling and venipuncture collections with associated analyte results
A
Blood sample collection
13 Dec 2025
VenousClinic
- Collector
- Caregiver
- Device type
- —
- Analytes
- 3
Blood sample collection
03 Jan 2026
VenousClinic
- Collector
- Caregiver
- Device type
- —
- Analytes
- 6
Blood sample collection
24 Jan 2026
CapillaryHome
- Collector
- Phlebotomist
- Device type
- Whatman 903 PSC
- Analytes
- 5
| Collection | Collection type | Collection place | Collector | Device type | Part | Analytes | Action |
|---|---|---|---|---|---|---|---|
Blood sample collection Details 22 Nov 2025 | Capillary | Clinic | Participant | Greiner MiniCollect EDTA | A | 3 | Open |
Blood sample collection Details 13 Dec 2025 | Venous | Clinic | Caregiver | — | A | 3 | Open |
Blood sample collection Details 03 Jan 2026 | Venous | Clinic | Caregiver | — | B | 6 | Open |
Blood sample collection Details 24 Jan 2026 | Capillary | Home | Phlebotomist | Whatman 903 PSC | B | 5 | Open |
Adverse Events
Reported adverse events during the study
| Date | Part | Visit | Severity | Device related | Action |
|---|---|---|---|---|---|
| 24 Dec 2025 | B | Visit 1 | Severe | 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 2025-12-17
| 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 | Neutral | — |
| B. Study Information and Visit Experience | B3 | Satisfaction with study visit organisation | Dissatisfied | — |
| B. Study Information and Visit Experience | B4 | Convenience of visit scheduling | Neutral | — |
| B. Study Information and Visit Experience | B5 | Study staff treated me respectfully | Neutral | — |
| 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 | Very 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) | 0 (no pain) | — |
| C. Conventional Sampling vs Microsampling Experience | C2 | Pain rating for microsampling device collection (0-10) | 4 | — |
| 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? | Both methods felt similar to me; convenience matters more. | — |
| D. Microsampling Device Experience | D1 | The device seemed easy to use | Agree | — |
| 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 | Disagree | — |
| D. Microsampling Device Experience | D4 | Confidence that microsampling could replace conventional blood sampling | Strongly agree | — |
| D. Microsampling Device Experience | D5 | Problems experienced with the device | Leakage, Device error | Small leakage on the cartridge. |
| 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 | Neutral | — |
| E. Home / Self-Collection Experience | E3 | Helpfulness of training materials | Very unhelpful | — |
| 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 agree | — |
| E. Home / Self-Collection Experience | E6 | I was able to complete sample collection without help | Neutral | — |
| E. Home / Self-Collection Experience | E7 | I had access to support during self-collection | Agree | — |
| 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 | Not answered | — |
| E. Home / Self-Collection Experience | E10 | I felt safe and confident during self-collection | Agree | — |
| E. Home / Self-Collection Experience | E11 | Satisfaction with shipping samples back to the lab | Very dissatisfied | — |
| F. Training and Support | F1 | Which support types were helpful? | Video tutorial, In-person explanation | Video tutorial answered most of my doubts. |
| F. Training and Support | F2 | Which factors would build your confidence in using microsampling? | Trying the device first with a healthcare professional | — |
| G. Future Preferences | G1 | Preferred future blood collection location | At the clinic | — |
| G. Future Preferences | G2 | Willingness to use a microsampling device at home for regular health-related blood sampling | Yes | Need to see results first. |
| G. Future Preferences | G3 | If you answered Maybe or No, please explain | Not answered | — |
Legal
Consent and withdrawal information
Date of consent
12 Nov 2025
Date of withdrawal
—
Withdraw reason
—