There is no direct test to diagnose AS.

没有直接的测试，诊断为。

One is a direct test and another is a boundary test.

其中之一可直接检验，另一个通过边界检验。

This can be done with a direct test or an indirect test.

这项工作适用于直接测试或间接测试。

The method has mild reaction condition and simple and direct test steps.

该方法反应条件温和，实验步骤简捷。

Objective To appraise the property of low density lipoprotein cholesterol (LDL-C) direct test reagents.

目的评价低密度脂蛋白胆固醇(LDL - C)直接法检测试剂性能指标。