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Question 60 / 312
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PARA-060
QBC (Quantitative Buffy Coat) technique — how does it work for malaria diagnosis?
A. QBC stains parasites on a thick blood smear
B. QBC: Heparinized capillary tube with ACRIDINE ORANGE stain + float; centrifuge → buffy coat layer; parasites FLUORESCE under UV — cannot identify Plasmodium species, requires fluorescence microscope
C. QBC detects malaria antigens like HRP2
D. QBC is a molecular PCR method for parasite identification
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