To see if you have high cholesterol, talk to your doctor, who can test your cholesterol levels by drawing a sample of your blood.

如果你想知道自己的胆固醇水平是否过高，可以去找你的医生，通过采血样来测试你的胆固醇水平。

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Positive results obtained with the kits are reported to the Health Department but are considered preliminary, and must be confirmed by a different test that requires a blood sample.

试剂盒检测出的阳性结果会被报道到卫生部门，但只是作为初步结果，还需要对血液样本进行其他的检测以确定检验结果。

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The sample was then exposed to a magnetic field applied parallel to the direction of flow of blood via a coil around the edge of the test tube.

然后，将样品放置在通过缠绕在试管边缘的线圈而产生的磁场中，该磁场的方向与血液流动方向相同。

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The reason it typically takes two days to conduct a blood test and it can take as long as five is that once a nurse takes a blood sample, it must be sent to a central lab where the blood is cultured or amplified in order to let any infections grow and then cleaned.

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