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Use of dried whole blood spots to measure CD4+ lymphocyte counts in HIV-1-infected patients Zumla A, et al.
The Lancet
362, 1459 (2003)
Link Here, they tested use of whole blood spots dried on filter paper to measure CD4+ lymphocyte counts. They compared these measurements with those obtained from matched liquid whole-blood samples analysed with standard flow cytometry, and found that the filter-paper method accorded well with flow cytometry CD4 counts greater than 200 cells/µL.
—Posted: November 2, 2003
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