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iSpecimen sources a broad range of biofluids, from both healthy patients and those with medical conditions, across thousands of different analytes with corresponding test results. Biofluids are available fresh or frozen and with or without additives, such as EDTA, Lithium Heparin, and Sodium Citrate. Some examples of the types of biofluids we provide include:

  • Whole Blood
  • Plasma
  • Serum
  • Buffy Coats
  • Urine
  • Stool
  • CSF
  • Liquid Cytology
  • Swabs
  • Saliva
  • Sputum
Biofluids for medical research

high quality biofluid specimens

Through the iSpecimen Marketplace, we match qualifying samples and associated data from our diverse network of hospitals, labs, biobanks, blood centers, and other clinical organizations to biomedical researchers’ specimen requests. We source biofluids, in addition to solid tissue and viable cells, offering clinical remnants, banked samples, and samples collected prospectively for research. Scientists gain easy access to the high-quality samples they need for their research.

Test tubes

recent biospecimen projects and collections


  • Thyroid Disease – serum: 200 patients total, 1.5ml each, frozen, from patients with treated

and untreated Grave’s Disease, Hashimoto’s, and thyroid disease other than Grave’s. Anti-

TSHR < 1.75 IU/L (100 pts), 1.75-8.75 IU/L (50 pts), and 8.75-40 IU/L (50 pts). Data to include

DOS (Jan 2017 or later), dx, tx status, basic demographics, test method and result.

  • AML – fresh whole peripheral blood EDTA or sodium heparin. 20 donors, 15ml each. Absolute

wbc ≥20,000, blasts ≥10%, known HIV and HCV status.

  • Prostate Ca – remnant serum: 200 donors, 1ml each.
Custom Study Design

biospecimen collection and custom Study Design

We work with iSpecimen Partner sites to collect, process, and ship biological specimens. Most biospecimens are shipped to iSpecimen and go through our QA process before being sent to researchers. We also offer additional processing services, such as DNA extraction.

When you require a custom collection of biofluid samples, iSpecimen Concierges are here to help. They can also help with study design, site selection, and compliance management, in addition to specimen collection, processing, and shipping.

The iSpecimen Marketplace

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