Did Tan mention why doctors want blood tests if they already have these lumbar punctures that work well?

谭有没有提到，如果医生已经有了效果很好的腰椎穿刺，为什么还要验血?

My mom was diagnosed with cancer in 2015. She needed to have a lumbar puncture to get a final diagnosis and treatment plan.

我妈在 2015 年确诊了癌症。她需要进行腰椎穿刺来获得最终的诊断和治疗计划。

Did Tan mention why doctors want blood tests if they already have these lumbar punctures that work well?

刘易斯：谭是否提到过，如果医生已经进行了效果良好的腰椎穿刺，为什么还要进行血液检查？

She needed to have a lumbar puncture to get a final diagnosis and treatment plan.

她需要进行腰椎穿刺才能得到最终的诊断和治疗方案。