Researchers from the Third Military Medical University in China said they have developed a cheap, easy test to determine a patient's blood type in a matter of seconds with nearly perfect accuracy.

我国第三军医大学的研究人员日前表示，已研制出一种鉴定病人血型的低成本简易测试，准确率接近百分之百，耗时数秒。

The new assay¹ is able to pinpoint² whether a person is type A, B or O in just 30 seconds, and determine the blood type in full detail in about two minutes.

这项新测试能够在仅仅30秒内就准确鉴定某人的血型是A、B还是O，并在约两分钟内鉴定血型的所有详细情况。

Results on the new device were published in Science Translational Medicine.

科学转化医学》杂志刊登了这一血型鉴定新方法的研究结果。

To create the test, the researchers took advantage of chemical reactions between blood serum³ proteins and a widely-available dye called bromocreosol green.

为了实现这项测试，研究人员利用了血浆蛋白和一种使用广泛的染料溴甲酚绿之间的化学反应。

Each test paper strip was also equipped with antibodies that recognized different blood type markers, such as A or B antigens, which can be found on the surface of red blood cells.

每张试纸也都配备有可以识别匹配不同血型的抗体，例如他们可以在血红细胞的表面发现A型或者B型血的抗原。

When a drop of blood was applied⁴, the results appeared as visual color changes in the observation window of the paper strip: teal if a blood group antigen was present in a sample and brown if not.

当血滴在测试条上面，会有肉眼可以观察到的颜色变化，这些颜色变化会在测试纸的观察窗变化范围之内，若提交样本是血型匹配的抗原，为蓝绿色，如果没有为棕色。

The method was tested on 3,550 samples of human blood with results of more than 99.9% accuracy, and the only inconsistencies occurred in trials with highly uncommon⁵ blood types.

研究人员已用该方法对3550份人类血样进行测试，结果准确度超99.9%，在试验中唯一失败的案例是由于血型罕见。