Leukopaks^®

Your source for quality fresh and cryopreserved human cells

StemExpress provides peripheral blood Leukopaks^® and Mobilized Leukopaks^® from healthy IRB consented donors that are tested negative for HBV, HCV, and HIV. Donor samples are collected using the Spectra Optia^® Apheresis System, where cell-rich mononuclear cells are extracted using a continuous flow method directly into a collection bag containing the anticoagulant ACD-A. Apheresis products are sent out fresh to customers or sent for further sorting at the StemExpress laboratory.

At StemExpress’ state-of-the-art laboratory, each source material can be processed to allow for the isolation of a variety of immune cells and their subsets, as well as hematopoietic stem cells. Each primary cell isolate comes with a Certificate of Analysis that guarantees viability, purity, and cell count.

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Your Cells, Your Way!

LEUKOPAKS^®

1 bag/1x10e¹⁰ TNCs
≥90% viability
Enriched MNCs
Low hematocrit
Low granulocytes
Two-week turnaround
Variety of collection sizes

MOBILIZED LEUKOPAKS^®

1 bag/2x10e¹⁰ TNCs
≥90% viability
Enriched CD34+ cells
Low hematocrit
Low granulocytes
Two to four-week turnaround
1^st or 2^nd-day collections

HIGH-QUALITY LEUKOPAKS

Representative flow analysis of a peripheral blood leukopak after RCB lysis.

CONFIDENCE IN YOUR RESEARCH

StemExpress facilities comply with strict guidelines regarding the production, processing, and management of tissue-based cellular products to ensure exceptional quality.

Compliant with FDA CFR 1271 regulations
- current Good Manufacturing Practices/Good Tissue Practices (cGMP/cGTP)
- Enterprise Resources Planning software (ERP) and Quality Management System (QMS)
Collection protocols are approved by the company’s Medical Director and Independent Review Board (IRB) in accordance with federal law

DONOR SELECTION

- - Extensive donor pool
  - Recallable and repeat donors
  - Specific donor demographics (age, weight, ethnicity, etc.)
  - Donor lifestyle characteristics (BMI, smoker/non-smoker, etc.)
  - Medical history (allergies, medications, etc.)
  - HLA, RhD, and ABO typing available
  - Additional infectious disease screening (LCMV, etc.)