Multiple specimen types collected from the same donor during a single visit — plasma, serum, PBMCs, whole blood, and more. Eliminate inter-donor variability for multi-matrix comparison, multi-omics integration, and longitudinal study designs.
A matched specimen set is a curated collection of two or more specimen types drawn from the same donor during a single phlebotomy or collection visit. The defining feature is donor identity linkage — every tube, fraction, or aliquot in the set shares the same biological source, collected under identical pre-analytical conditions at a single point in time.
This design eliminates the most confounding variable in multi-matrix research: inter-donor biological variability. When plasma and serum from the same donor are compared, any observed differences reflect the matrix itself — the presence or absence of anticoagulant, the effect of clotting, or centrifugation protocol — not differences between two individuals' biochemistry. The same logic applies to comparing PBMCs and whole blood transcriptomes, or integrating proteomics and metabolomics data across different analyte compartments.
For longitudinal studies, we maintain ongoing relationships with consented donors who can be scheduled for matched collections at defined intervals — baseline, 4 weeks, 8 weeks, 6 months, or any protocol-specified timeline. When you buy matched specimen sets for research, you are purchasing controlled experimental design, not just biological material.
| Parameter | Detail |
|---|---|
| Included Fractions | Customizable: EDTA whole blood, EDTA plasma, citrate plasma, SST serum, buffy coat, PBMCs, PAXgene RNA (up to safe draw volume) |
| Draw Volume | Typically 50–100 mL per visit; protocol-specific draw panels designed within OSHA/clinical safety limits |
| Collection | Single phlebotomy visit; all tubes drawn in standardized order (citrate → EDTA → SST) per CLSI H3-A6 |
| Processing | Fractions processed in parallel by trained phlebotomist/tech team; timestamps documented per fraction |
| Longitudinal Option | Same donor scheduled at protocol-specified intervals; donor ID linkage maintained across time points |
| Turnaround | 5–10 business days for initial cohort; longitudinal follow-up per protocol schedule |
| Documentation | Fraction-level processing records, draw order, timestamps, demographics, consent, chain-of-custody |
Provide your desired specimen combination, volume per fraction, donor criteria, number of matched donors, and any longitudinal collection schedule. We will design the draw panel within safe limits.
Donors are matched against your cohort criteria — age, sex, BMI, disease state, medications, ancestry — and enrolled into your collection schedule. Longitudinal donors are kept reserved for your protocol.
All fractions from each donor are processed in parallel, labeled with matched donor IDs, and shipped together with fraction-level metadata. Longitudinal collections follow the same protocol at each time point.
A typical matched set can include: EDTA whole blood, EDTA plasma, citrate plasma, SST serum, buffy coat, Ficoll-isolated PBMCs, and PAXgene RNA tubes. The combination depends on total draw volume the protocol requires. We design draw panels to maximize specimen diversity within safe phlebotomy limits (typically 50–100 mL per visit per OSHA and ACLA guidelines).
When comparing analytes across different specimen matrices, using specimens from different donors introduces biological variability that can mask or inflate matrix-specific effects. Matched sets ensure all fractions come from the same biological background — the only variable between fractions is the matrix, not the donor. This is essential for valid cross-matrix comparisons and multi-omics data integration.
Yes. We maintain longitudinal donor relationships for this purpose. Donors can be scheduled at protocol-defined intervals — baseline, post-treatment, 4-week follow-up, 6-month — with matched specimen sets at each time point. This is the standard design for pharmacodynamic biomarker studies, disease progression monitoring, and vaccine immunogenicity trials.
Tell us your specimen combination and donor criteria. We'll design the draw panel and provide a quote within 24 hours.
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