Ashok Patel Ashok Patel Asked 8 months ago

Will lung cancer show up in blood tests?

My father is a smoker, and he's always coughing. We're trying to convince him to get checked. Would a regular blood test show if he has lung cancer, or are other tests needed?

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10 answers

Rohit Das Rohit Das Joined Jun 2026 5 months ago
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Hey, don't stress too much, but no, usually blood tests alone aren't enough to diagnose lung cancer. They can show some indicators or general health issues, but for cancer, doctors usually need scans or biopsies. So if you're worried, definitely talk to a doctor for proper tests.

Meera Joshi Meera Joshi Joined Jan 2026 8 months ago

Ho na, blood test se sidha pata nahi chalta. They check general things. But if something is suspicious, then doc will ask for CT scan, ya other big tests. So, if you're worried, just go to doctor, don't keep thinking.

Nidhi Patel Nidhi Patel Joined Feb 2026 8 months ago

I remember panicking once about a cough, thinking the worst, and wondering if my basic blood test would show something. My doctor explained that while blood tests can show general signs like high inflammatory markers, they are not specific for lung cancer. You need more advanced imaging and possibly a biopsy for a diagnosis. So, don't jump to conclusions, but do get professional advice.

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Consult a pulmonologist

Amit Sharma Amit Sharma Joined Feb 2026 8 months ago

I'm not a doctor, but my uncle had lung issues, and his routine blood tests only showed some general inflammation. The actual diagnosis came after X-rays and then a CT scan. So, from what I've seen, blood tests alone aren't usually enough for that specific diagnosis.

Sunita Das Sunita Das Joined Mar 2026 7 months ago

Blood tests can give clues, but for lung cancer, doctors usually need more specific scans to properly check. It's always best to follow a doctor's recommendation for tests.

Suresh Gupta Suresh Gupta Joined May 2026 6 months ago

From my own family's experience with serious illness, I can tell you that for something like suspected lung cancer, you really need specialized tests, not just standard blood work. Blood tests might show general issues, but please, if you have concerns, see an oncologist directly. Don't delay.

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Ananya Reddy Ananya Reddy Joined May 2026 5 months ago

My health app actually has some info on this. Blood tests might show general inflammation or signs like anemia, which *could* be related to cancer, but they can't directly detect lung cancer cells. For that, you usually need imaging like CT scans or even a biopsy. Think of blood tests as an initial screen, not a definitive diagnosis.

Gaurav Singh Gaurav Singh Joined Jun 2026 4 months ago

Na bhai, lung cancer directly blood test mein nahi aata. Blood tests general health ka idea dete hain. Agar kuchh serious suspect hota hai, tab jaake CT scan ya biopsy hoti hai. So, agar worry hai, toh doc ke paas jao, haan?

Priya Menon Priya Menon Joined Jul 2026 4 months ago

No, blood tests are not diagnostic for lung cancer. They can indicate abnormalities or general health issues, but definitive diagnosis requires imaging tests like CT scans, PET scans, and most importantly, a biopsy of the lung tissue. You need to consult a specialist for a proper workup.

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