Examples
Worked examples
- Is an instance
A tube of peripheral blood drawn for a clinical trial, aliquoted into plasma and serum fractions, barcoded, and frozen at -80°C in a core facility's biorepository for future biomarker analysis.
- Is an instance
A formalin-fixed paraffin-embedded (FFPE) tumor tissue block retained after a diagnostic biopsy and later released, under an approved protocol and material transfer agreement, to a research lab for genomic sequencing.
Counter-examples
Looks similar, but isn't
- Not an instance
A blood sample drawn, tested immediately at the point of care, and discarded per standard clinical waste procedures is not a biospecimen in the research sense — it was never collected or retained for reuse, and no chain-of-custody or storage record exists.
Editorial commentary
In research and clinical-research operations, a biospecimen is any biological material — blood, tissue, urine, saliva, sputum, cerebrospinal fluid, or a derived product such as extracted DNA/RNA, plasma, serum, or an established cell line — that has been collected from a human, animal, or other living source and retained, under a documented chain of custody, for use in research, diagnostic testing, or long-term storage. The term is used across clinical trials, biobanking, core-facility operations, and regulatory guidance (including NIH and FDA human-subjects material) to distinguish research-bound biological material from a routine clinical sample that is tested once and discarded.
Biospecimen vs. Specimen vs. Sample
The three terms overlap and are often used loosely, but in a lab-operations or biorepository context they carry slightly different emphasis. Specimen is the broadest clinical/laboratory term for any biological material submitted for examination. Sample is even more general and is used across disciplines (environmental samples, food samples) as well as biology. Biospecimen specifically signals that the material originates from a living organism (most often a human research participant) and is being collected, labeled, and preserved with an eye toward future or repeated use — not just a single point-of-care test. A biospecimen is typically accompanied by linked metadata: collection date/time, donor or subject identifier (direct or coded), collection method, processing steps, and storage conditions.
Human Biospecimens: Consent and Regulatory Context
When a biospecimen is collected from a human research participant in the United States, its collection and secondary use fall under the Common Rule (45 CFR 46) and, for FDA-regulated research, 21 CFR 50. Whether a given use of an already-collected biospecimen requires new informed consent, falls under a broad consent already on file, or qualifies for an IRB waiver depends on factors such as identifiability and whether the material was collected specifically for the new research question — see CASRAI’s guide on the regulatory pathways for secondary use of identifiable data and biospecimens. Biobanks that collect biospecimens for a range of future, not-yet-specified studies typically rely on one of several consent models; see Biobank Specimen Consent Models: Broad, Tiered, and Dynamic Consent Compared.
Intake, Labeling, and Chain of Custody
For lab managers and core-facility directors, the operational work around a biospecimen starts at intake: verifying the collection record, applying a unique barcode or identifier, logging processing steps (aliquoting, centrifugation, extraction), and recording every subsequent transfer, freeze-thaw cycle, or shipment. This documented trail — who had custody of the biospecimen, when, and under what conditions — is what makes the material usable as research evidence later; a biospecimen with a broken or undocumented chain of custody is often unusable regardless of its biological quality. See Sample Chain of Custody in Research Labs: What It Is and How to Document It for the practical documentation steps.
Storage, Quality, and Accreditation Standards
Biospecimens intended for long-term research use are typically stored in a biobank or biorepository under defined temperature, container, and stability controls. Two standards commonly referenced in biospecimen quality management are ISO 20387, the international general-requirements standard for biobanking, and the CAP Biorepository Accreditation Program (CAP-BAP), a US accreditation pathway for biorepositories. Facilities managing large biospecimen inventories often draw on best-practice frameworks published by ISBER and the NCI; see ISBER vs. NCI Best Practices for Biorepositories for how the two compare.
Frequently Asked Questions
What does biospecimen mean?
A biospecimen is biological material — such as blood, tissue, or a derived product like extracted DNA — collected from a human or other living source and preserved under a documented chain of custody for research or clinical testing use, as opposed to a sample tested once at the point of care and discarded.
What is a human biospecimen?
A human biospecimen is a biospecimen collected from a human research participant or patient. Because it originates from an identifiable or potentially identifiable person, its collection, storage, and any secondary research use are governed by human-subjects regulations (in the US, the Common Rule at 45 CFR 46 and, where applicable, FDA regulations) and by the informed consent the donor provided.
Is a biospecimen the same as a sample?
Not exactly. “Sample” is a general term used across many fields for any portion of material taken for examination. “Biospecimen” specifically denotes biological material from a living source that is collected and retained — typically with linked metadata and under a chain-of-custody record — for research or future use, rather than tested once and discarded.
What are examples of biospecimens?
Common biospecimens include whole blood, plasma, serum, urine, saliva, cerebrospinal fluid, tumor or normal tissue (fresh-frozen or formalin-fixed paraffin-embedded), buccal swabs, and derived products such as extracted DNA, RNA, or an established cell line.
Related Terms
Also known as
Biological specimen · Human biospecimen
Machine-readable encodings
Use in your systems
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