Peripheral Blood Mononuclear Cells
Free Same Day Delivery of Fresh Blood Products

20% OFF Frozen PBMCs

10% OFF Mobilized Primary Cells

Peripheral Blood Mononuclear Cells (PBMCs) are isolated from freshly drawn Leukopaks® collected at one of our Stem Cell Collection Centers. Following strict cGMP guidelines, red blood cells and platelets are removed at our on-site FDA-registered cell manufacturing facility, allowing for an enriched PBMC fraction with minimal contaminating cells. Cell attributes, such as viability, purity, and cell count, are checked to meet rigorous standards ensuring high-quality cells before leaving the facility.


The StemExpress Advantage

Our goal is to provide high-quality products that enable you to easily navigate barriers, enhance quality, and drive success in your research.

High-Quality PBMCs

peripheral blood mononuclear cells

Figure 1. Representative flow data of the viability and purity of peripheral blood mononuclear cells from a Leukopak® prior to cryopreservation.

  • Low red blood cell, granulocyte, and platelet content
  • Large lots of PBMCs from a single donor
  • Viral testing for HIV, HBV, and HCV
  • ≥95% viability before cryopreservation
  • ≥90% purity before cryopreservation
  • 1x108 and 3x108 vial sizes only
  • In stock, frozen format only


  1. Yamada et al. (2014) G0S2 Inhibits the Proliferation of K562 Cells by Interacting with Nucleolin in the Cytosol. Leuk Res 38: 210-217. Abstract.
  2. Yang et al. (2016) Human Umbilical Cord-derived Mesenchymal Stem Cells Suppress Proliferation of PHA-activated Lymphocytes In Vitro by Inducing CD4+CD25highCD45RA+ Regulatory T Cell Production and Modulating Cytokine Secretion. Cell Immunol 302: 26-31. Abstract.
  3. Noto et al. (2018) The SRG™ Rat: A Novel SCID Rat for Humanization Studies. AACR 2018 Poster.

What Makes Us Different


We are the direct supplier of all the products we carry, from procuring whole tissue to the isolation of primary cells, no middleman involved.

  • Large and assorted selection of products available to cover all aspects of your research
  • Robust and diverse donor pool for effortless selection of the right specimen for your research
  • Recallable and repeat donors for critical longitudinal studies
  • Customizable products that allow flexibility and simplicity in decision making
  • Same day delivery in select cities for quick access to the products you need
  • Streamlined process from collection through delivery to guarantee operational excellence and consistent quality products
  • FDA registered cell manufacturing facility that follows cGMP guidelines to ensure high-quality products
  • Employ FDA compliant data management software (QMS) that ensures traceability and accountability
  • World-class customer service before, during, and after your purchase

More Information

For custom orders or to speak to one of our sales specialists, Contact Us at 530.303.3828.

Enter discount code PBMC20OFF at checkout.*
*Offer requires a $500 minimum purchase of PBMNC100C and/or PBMNC300C. Expires April 30, 2019.

Frequently Asked Questions

What does StemExpress do?
  • Procures healthy and diseased human tissue and blood
  • Isolates human primary cells
  • Processes whole blood/tissue (umbilical cord blood, peripheral blood (healthy and diseased), bone marrow, maternal blood, and mobilized peripheral blood)
  • Cultures selected cell types
  • Conducts immunophenotyping using flow cytometry
How to thaw StemExpress primary cells for optimal viability?

Primary cells are very sensitive to many aspects of the thawing procedure, such as heat, DMSO, agitation, and high centripetal forces. Obtaining high viability after thawing human primary cells can be difficult if not performed quickly and with good laboratory techniques. At StemExpress, our laboratory technicians have years of experience handling and thawing frozen human primary cells and have designed a procedure that will help you obtain the highest viability of your cells. Click Thawing Protocol to access the protocol.

Does StemExpress offer custom or specialty services?

Yes. StemExpress is happy to work with researchers to meet the specific needs of their work.

Where can StemExpress ship products?

All over the world. We have a variety of shipping methods to meet your needs. Please inquire for more information.

How to decide if fresh or frozen primary cells are the right format for my research?

There are many factors that may influence your decision, such as cell type, cell functionality, and logistical and timing flexibility. We hope that the following article provides the information you require to make a decision in choosing fresh or frozen primary cells for your specific research.

Hi, have questions?

A StemExpress Expert is happy to help!

Call 530.303.3828 or Contact Us