| 摘要 |
A capillary hematocrit separation structure is included within a housin g having a fluid inlet port, a reaction region, and a capillary pathway connecting the inlet port and the reaction region. The capillary pathway is dimensioned so that the driving force for the movement of liquid through the capillary pathway arises from capillary pressure. A plurality of obstruction s are fixed in the capillary pathway, each obstruction having a concave portio n facing toward the vented reaction region on the down stream side of the obstructions as viewed with reference to a liquid flowing from the inlet por t to the reaction region. The capillary pathway in a hematocrit separation structure for a single drop sample size includes about 10 5 obstructions, ea ch obstruction including a concave portion having a volume of between about -4 to 10 -5 .mu.l for selectively receiving hematocrit.
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