Development↦Biobanking↦Handling of Biological Material↦Sample Collection
What is it? Why is it important?
Sample collection is the sample-workflow step where Biological Material (BM) is retrieved from a donor and placed in a primary container (e.g. a blood collection tube).
The aim is to ensure that:
- Donors have agreed to the collection of their BM. (e.g. he/she has dated and signed an ICF)
- Donor safety is guaranteed
- Donor identity is protected by using codes for sample labelling (e.g. data confidentiality)
- BM collection is performed in a standardized manner, such as collection:
- Source (e.g. venous blood, biopsy during surgery)
- Means (e.g. container type, collection chemicals needed, BM intermediate storage prior to transport e.g. on ice, at -20°C)
- Timing (e.g. date and time, donor fasting state, maximum acceptable time-laps between collection and BM processing)
- Tracking (e.g. samples are individually labelled for subsequent identification trough a donor identification-log)
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By performing and documenting the collection of BM in a standardised manner, allow researchers to:
- Retrace all BM collection procedures, thereby confirming BM integrity. This is especially helpful in the event of unexpected results or quality controls
- Have increased confidence in research results
Collected samples must be clearly identifiable, such as:
- Time and date of BM collection
- Study or project ID (e.g. hospital, department)
- Coded so as to allow for subsequent donor identification
- In the event of multiple or sequential BM collections (e.g. over several weeks or months), the ability to identify or position the BM according to collection sequence and timing
What do I need to do?
Define standardized BM collection and documentation procedures.
Ask yourself:
- What type of BM do I plan to collect? (e.g. tissue, blood, urine, stools)
- How will BM be obtained? (e.g. through biopsy, surgery, blood draw)
- Will there be single or multiple collections from each donor? (e.g. at specific intervals for a defined period)
- What is the collection site? (e.g. an operating room, hospital services, patient home)
- Who collects the BM? (e.g. a surgeon, nurse, donor)
- For the planned workflow and the downstream analysis:
- How much BM do I need? (volume, scope)
- What primary and subsequent storage containers are required?
- How many collection containers and labels are required in total?
- What additional data do I need? (e.g. donor information)
- What coding system guarantees unambiguous BM tracing among all specimens? To avoid doublets each donor specimen is labelled with a unique identifier
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Write an SOP and/or a WI that explains the collection process:
- Include a responsibility list that defines who is responsible for what task
Create relevant registration forms that document collection-related information, such as:
- Timing of BM collection
- Person responsible for BM collection
- Preliminary on site storage conditions (e.g. BM is stored on ice, at room temperature, at -20°C)
- Required information regarding donor status (e.g. demographics, diagnosis and treatment, fasting state, time since last urination, time since last meal, menstruation)
Ensure:
- Staff responsible for the collection of BM are trained and qualified to do so
- Non-conformities that occur during BM collection are documented (e.g. insufficient volume, donor was not fasting, on site storage conditions were sub-optimal, tissue sample was dropped on the floor)
Where can I get help?
Your local Research Support Centre↧ can assist you with experienced staff regarding this topic
Basel, Departement Klinische Forschung (DKF), dkf.unibas.ch
Lugano, Clinical Trials Unit (CTU-EOC), ctueoc.ch
Bern, Department of Clinical Research (DCR), dcr.unibe.ch
Geneva, Clinical Research Center (CRC), crc.hug.ch
Lausanne, Clinical Research Center (CRC), chuv.ch
St. Gallen, Clinical Trials Unit (CTU), h-och.ch
Zürich, Clinical Trials Center (CTC), usz.ch
The Swiss Biobanking Platform (SBP) can provide you with support on this topic.
SBP Documents
SOPs, Forms and Templates – see in particular
- Biological Material SOP
References
ISO 20387:2018 Biotechnology - Biobanking (access liable to cost)- General Requirements for Biobanking – see in particular section
- 7.2 Collection of biological material and associated data
Swiss Law
HRO – see in particular article
- Art. 21 Serious Events
Publications PubMed
PMID: 28242283
- Giavarina, et al. “Blood venous sample collection: Recommendations overview and a checklist to improve quality”
PMID: 23072858
- Lippi et al. "Preanalytical quality improvement: in quality we trust"
PMID: 25979952
- Ellervik et al. “Preanalytical variables affecting the integrity of human biospecimens in biobanking”
PMID: 29377712
- Betsou et al. “Standard PREanalytical Code Version 3.0