Are you trying to make a diagnosis?

你要做出诊断吗？

Doctors need to make a diagnosis before he can treat an illness...

医生需先做诊断后，再治疗疾病。

Could you make a diagnosis only relying on the result of pulse feeling?

能够仅仅依靠脉诊结果就作出诊断吗？

Specific blood tests and bone marrow tests are needed to make a diagnosis.

做出诊断需要专门的血液、骨髓的检查。

My mother missed work and took her to doctors who couldn't make a diagnosis.

我妈妈请了假带奶奶去看医生，却无法得到一个诊断。