Blood sample collection
29 Sep 2025
VenousClinic
- Collector
- Caregiver
- Device type
- —
- Analytes
- 5
Overview
Key participant information
Participant code
COMFORT-019
Enrollment date
22 Sep 2025
Clinical site
Vall d’Hebron
Enrollment place
Hospital
Enrolled part
AB
Status
Completed
Study Population Cohort
Prostate cancer
QUESTIONNAIRE
Complete
Study Visits
Details of participatnt visits in Part A and/or Part B
| Date | Part | Type of visit | Place | Status | Comments |
|---|---|---|---|---|---|
| 22 Sep 2025 | A | Screening | Hospital | Completed | Screening visit completed. Eligibility confirmed. |
| 29 Sep 2025 | A | 1st Visit | Hospital | Completed | Baseline visit completed. Sample collection performed at clinical site. |
| 20 Oct 2025 | A | 2nd Visit | Health Primary Care | Completed | Ad-hoc follow-up visit. |
| 10 Nov 2025 | B | 1st Visit | Not applicable (N/A) | Completed | Follow-up visit completed. Capillary microsampling at home. |
| 01 Dec 2025 | B | 2nd Visit | Health Primary Care | Completed | Ad-hoc follow-up visit. |
| 22 Dec 2025 | B | 3rd Visit | Health Primary Care | Completed | Ad-hoc follow-up visit. |
Collections
Blood microsampling and venipuncture collections with associated analyte results
A
Blood sample collection
20 Oct 2025
CapillaryClinic
- Collector
- Participant
- Device type
- Greiner MiniCollect EDTA
- Analytes
- 5
Blood sample collection
10 Nov 2025
CapillaryClinic
- Collector
- Caregiver
- Device type
- TAP Micro Select
- Analytes
- 3
Blood sample collection
01 Dec 2025
CapillaryClinic
- Collector
- Caregiver
- Device type
- Greiner MiniCollect EDTA
- Analytes
- 7
Blood sample collection
22 Dec 2025
VenousClinic
- Collector
- Nurse
- Device type
- —
- Analytes
- 6
| Collection | Collection type | Collection place | Collector | Device type | Part | Analytes | Action |
|---|---|---|---|---|---|---|---|
Blood sample collection Details 29 Sep 2025 | Venous | Clinic | Caregiver | — | A | 5 | Open |
Blood sample collection Details 20 Oct 2025 | Capillary | Clinic | Participant | Greiner MiniCollect EDTA | A | 5 | Open |
Blood sample collection Details 10 Nov 2025 | Capillary | Clinic | Caregiver | TAP Micro Select | B | 3 | Open |
Blood sample collection Details 01 Dec 2025 | Capillary | Clinic | Caregiver | Greiner MiniCollect EDTA | B | 7 | Open |
Blood sample collection Details 22 Dec 2025 | Venous | Clinic | Nurse | — | B | 6 | Open |
Adverse Events
Reported adverse events during the study
| Date | Part | Visit | Severity | Device related | Action |
|---|---|---|---|---|---|
| 20 Oct 2025 | B | Visit 3 | Mild | No |
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 2025-10-06
| 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 | Strongly disagree | — |
| 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 | Very satisfied | — |
| B. Study Information and Visit Experience | B4 | Convenience of visit scheduling | Not answered | — |
| 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 | Neutral | — |
| B. Study Information and Visit Experience | B9 | Impact on daily life was acceptable | 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) | 9 | — |
| C. Conventional Sampling vs Microsampling Experience | C2 | Pain rating for microsampling device collection (0-10) | 7 | — |
| C. Conventional Sampling vs Microsampling Experience | C3 | Preferred blood collection method if given a choice | Conventional blood sampling | Microsampling felt much less invasive. |
| C. Conventional Sampling vs Microsampling Experience | C4 | Why did you choose this preferred method? | Microsampling caused noticeably less discomfort and was faster to perform. | — |
| 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 | Strongly agree | — |
| D. Microsampling Device Experience | D3 | I could use the device at home | Agree | — |
| 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 | Pain | — |
| E. Home / Self-Collection Experience | E1 | Did you take part in Part A (home self-collection)? | Yes | — |
| E. Home / Self-Collection Experience | E2 | Satisfaction with microsampling equipment and materials | Not answered | — |
| E. Home / Self-Collection Experience | E3 | Helpfulness of training materials | Neutral | — |
| E. Home / Self-Collection Experience | E4 | Confidence using microsampling for self-collection | Disagree | — |
| E. Home / Self-Collection Experience | E5 | Self-collection instructions were clear | Neutral | — |
| E. Home / Self-Collection Experience | E6 | I was able to complete sample collection without help | Strongly disagree | — |
| 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 disagree | — |
| E. Home / Self-Collection Experience | E11 | Satisfaction with shipping samples back to the lab | Neutral | — |
| F. Training and Support | F1 | Which support types were helpful? | Printed instructions, In-person explanation, Video tutorial | Video tutorial answered most of my doubts. |
| F. Training and Support | F2 | Which factors would build your confidence in using microsampling? | Tutorial videos, Doctor recommendation, Trying the device first with a healthcare professional | — |
| 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 | Concerned about correctly handling the sample at home. | — |
Legal
Consent and withdrawal information
Date of consent
19 Sep 2025
Date of withdrawal
—
Withdraw reason
—