Leukopaks, Fresh | StemExpress

Leukopaks, Fresh

In stock
Category: Research & Clinical Products
Select SKU Size / Day Price
LE001F 1 billion TNCs $956 USD
LE002.5F 2.5 billion TNCs $1,806 USD
LE005F 5 billion TNCs $2,289 USD
LE010F 10 billion TNCs $3,281 USD
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Product Description

Leukopaks are collected from healthy IRB consented donors, tested negative for HBV, HCV, and HIV, using the Spectra Optia® Apheresis System, where cell-rich mononuclear cells are extracted using a continuous flow system directly into a sterile collection bag containing the anticoagulant ACD-A. Up to 12 Leukopak collections can be performed on the same donor in a given year, providing an ample amount of PBMCs for large-scale experiments and research studies. Additionally, 200-300mL of plasma can be collected at the time of the donor draw. 

The following are mean percentages of cell populations in a Leukopak:

     • T cells - 55% 
     • Monocytes - 27%
     • B cells - 9% 
     • NK cells - 8% 
     • CD34+ stem cells - 0.1% 
     • Granulocytes - 2.4%

We do not guarantee the percentage of cell populations in a Leukopak, as they can vary from donor to donor.

Cells were obtained using Institutional Review Board (IRB) approved consent forms and protocols.

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More Information
Species Human
Disease State Healthy
Cell and Tissue Source Peripheral Blood
Cell Type Mononuclear Cells
Donor Attributes Inquire
Viability ≥95% by Flow Cytometry
Format Fresh
Anticoagulant ACD-A
Application Area Research

Product Information Sheet

Certificate of Analysis

Material Safety Data Sheet


  • 1 Abelin et al. (2019) Defining HLA-II Ligand Processing and Binding Rules with Mass Spectrometry Enhances Cancer Epitope Prediction. Immunity 51(4): 766-779. Abstract


Figure 1. Representative flow analysis of a peripheral blood Leukopak after RBC lysis. 

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