TransFix®/EDTA Vacuum Blood Collection Tubes

Patient blood samples are often analyzed for their immunophenotypic profile after collection for various assays. However, cells and other surface antigens start degrading immediately upon venipuncture. Without preservation, these precious cells break down before appropriate analysis can be done on the sample, resulting in repeat patient sample drawings. To avoid inconvenience to the patient and costly repeat drawings, cells can be stabilized using TransFix/EDTA Vacuum Blood Collection tubes (TVTs) until appropriate testing can be completed. The TVTs contain a patented stabilization solution, TransFix, which preserves cells and cellular antigens for up to 14 days prior to analysis1.                                                                                                                                                                                         



 Why Use TransFix TVTs:

*Stabilizes cell surface antigens and prevents cellular degradation for up to 14 days
*Preserves sample integrity during shipment between sites
*Permits sample batching
*Enables repeat testing without requiring patient recall



Sample Transport & Batching

The use of TransFix TVTs is beneficial in situations where sample storage, batching or transportation is required prior to analysis. TransFix stabilized samples can be stored and transported at ambient temperature. Since samples can be stored as a batch, the need for frequent deliveries can be reduced. TVTs also reduce the need to recall patients for additional phlebotomy by extending the window of opportunity for sample testing, resulting in significant cost savings2.

Easy to Use

Samples are collected in TVTs during phlebotomy. They contain the correct amount of TransFix/EDTA to stabilize the volume of blood for which the tube is designed to fill. Just mix by inversion and the stabilized sample is now ready for analysis.


 TransFix Vacuum Blood Collection Tubes are for use in diagnostic procedures


TransFix/EDTA Vacuum Blood Collection Tubes (TVTs) are intended for collection and storage of human whole blood specimens for immunophenotyping of white blood cells by flow cytometry. Recovery of lymphocyte subset marker of the HIV panel can be accomplished over a 14-day period following collection. (CD3, CD8, CD4, CD45, CD16/CD56, CD19).


Code # Name Size
TVT-03-50-US TransFix/EDTA Vacuum Blood Collection Tubes 50 x 3mL


1) Canonico, B., Betti, M., Luchetti, F., Battistelli, M., Falcieri, E., Ferri, P., Zamai, L., Barnett, D. and Papa, S. (2010), Flow cytometric profiles, biomolecular and morphological aspects of transfixed leukocytes and red cells. Cytometry, 78B: 267–278. doi:10.1002/cyto.b.20510

2) Vicky Y. Hoymansa, Amaryllis H. Van Craenenbroecka, Luc Bruyndonckxa, , Sabrina H. van Ierssela, Christiaan J. Vrintsa, Viviane M. Conraadsa, Emeline M. Van Craenenbroecka, “TransFix® for Delayed Flow Cytometry of Endothelial Progenitor Cells and Angiogenic T Cells.” Microvascular Research, Volume 84, Issue 3, November 2012, Pages 384–386.