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红细胞比积是一项临床常用检查,由于目前检验发展方向是向微量化发展,为此改用微量法测定红细胞比积。但微量比积管没有刻度,要想算出比积必须用尺量出全血柱长和红细胞柱长才能算出二者比值。为方便起见,利用相似三角形的原理,设计了一个移动比例尺。在10cm~2座标纸上划一条45°直线成一三角形(见图1),把微量比积管垂直于三角形底边,使全血柱长顶端与斜线平齐,
Hematocrit is a commonly used clinical examination, as the current development direction of the test is to the development of micro-quantification, to change the micro-method for the determination of hematocrit. However, there is no trace of micro-tube than the scale, in order to calculate the specific product must be measured out of the whole blood column length and red blood cell length to calculate the ratio between the two. For convenience, using the principle of similar triangles, a moving scale is designed. Draw a 45 ° straight line into a triangle on the 10cm ~ 2 coordinate paper (see Figure 1). Put the microtiter plate perpendicular to the bottom of the triangle, flush the long end of the whole blood column with the slanted line,