A liquid biopsy is when they check your blood for cancer cells or DNA, instead of cutting you. For me, it told the doctors which *laaf* (mutation) was driving my lung cancer, so they could give me a targeted tablet instead of harsh chemo. But, bhaiya, the obvious answer is that it's simple—in my life, the first test showed nothing, so I had to wait in fear for a second while my cough got worse. It can find the key, but sometimes it makes you wait too long in the dark.
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