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  • Multiplexing slanted spiral microchannels for ultra-fast blood plasma separation

    Author(s)
    Rafeie, Mehdi
    Zhang, Jun
    Asadnia, Mohsen
    Li, Weihua
    Warkiani, Majid Ebrahimi
    Griffith University Author(s)
    Zhang, Jun
    Year published
    2016
    Metadata
    Show full item record
    Abstract
    Blood and blood products are critical components of health care. Blood components perform distinct functions in the human body and thus the ability to efficiently fractionate blood into its individual components (i.e., plasma and cellular components) is of utmost importance for therapeutic and diagnostic purposes. Although conventional approaches like centrifugation and membrane filtration for blood processing have been successful in generating relatively pure fractions, they are largely limited by factors such as the required blood sample volume, component purity, clogging, processing time and operation efficiency. In this ...
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    Blood and blood products are critical components of health care. Blood components perform distinct functions in the human body and thus the ability to efficiently fractionate blood into its individual components (i.e., plasma and cellular components) is of utmost importance for therapeutic and diagnostic purposes. Although conventional approaches like centrifugation and membrane filtration for blood processing have been successful in generating relatively pure fractions, they are largely limited by factors such as the required blood sample volume, component purity, clogging, processing time and operation efficiency. In this work, we developed a high-throughput inertial microfluidic system for cell focusing and blood plasma separation from small to large volume blood samples (1-100 mL). Initially, polystyrene beads and blood cells were used to investigate the inertial focusing performance of a single slanted spiral microchannel as a function of particle size, flow rate, and blood cell concentration. Afterwards, blood plasma separation was conducted using an optimised spiral microchannel with relatively large dimensions. It was found that the reject ratio of the slanted spiral channel is close to 100% for blood samples with haematocrit (HCT) values of 0.5% and 1% under an optimal flow rate of 1.5 mL min-1. Finally, through a unique multiplexing approach, we built a high-throughput system consisting of 16 spiral channels connected together, which can process diluted samples with a total flow rate as high as 24 mL min-1. The proposed multiplexed system can surmount the shortcomings of previously reported microfluidic systems for plasma separation and cell sorting in terms of throughput, yield and operation efficiency.
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    Journal Title
    Lab on a Chip
    Volume
    16
    Issue
    15
    DOI
    https://doi.org/10.1039/c6lc00713a
    Subject
    Chemical sciences
    Engineering
    Science & Technology
    Life Sciences & Biomedicine
    Physical Sciences
    Technology
    Biochemical Research Methods
    Publication URI
    http://hdl.handle.net/10072/407258
    Collection
    • Journal articles

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