@doctorleentannous: One of the biggest 𝐦𝐢𝐬𝐜𝐨𝐧𝐜𝐞𝐩𝐭𝐢𝐨𝐧𝐬 I see as a GP is the belief that if something serious-especially cancer- was going on, it would automatically show up on a routine blood test. But that’s not how blood tests work, and here’s why: 𝐑𝐨𝐮𝐭𝐢𝐧𝐞 blood tests only tell us what we ask them to look for. When we order standard tests, we usually check things like: • 𝘍𝘶𝘭𝘭 𝘉𝘭𝘰𝘰𝘥 𝘊𝘰𝘶𝘯𝘵 (𝘍𝘉𝘊): looks at your haemoglobin, white cells • 𝘒𝘪𝘥𝘯𝘦𝘺 𝘢𝘯𝘥 𝘭𝘪𝘷𝘦𝘳 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯 • 𝘊𝘩𝘰𝘭𝘦𝘴𝘵𝘦𝘳𝘰𝘭 𝘭𝘦𝘷𝘦𝘭𝘴 • 𝘉𝘭𝘰𝘰𝘥 𝘴𝘶𝘨𝘢𝘳 • 𝘛𝘩𝘺𝘳𝘰𝘪𝘥 • And sometimes 𝘐𝘯𝘧𝘭𝘢𝘮𝘮𝘢𝘵𝘰𝘳𝘺 𝘮𝘢𝘳𝘬𝘦𝘳𝘴 like CRP These are incredibly useful for giving us an overview of your general health but they don’t screen for everything, and they don’t automatically detect cancer. Some cancers don’t show any changes on these routine markers at all. Others may show subtle hints, like: • Low haemoglobin (sign of slow blood loss) • Raised inflammatory markers But these findings are non-specific meaning they can be caused by many different, far more common conditions. We can test for tumour markers, but: • They are not part of routine blood tests • Most are not screening tools • They are only added when a healthcare professional has a specific reason, based on your symptoms, examination, or medical history That’s why normal routine blood tests don’t always mean nothing is happening, and why symptoms always guide the investigations not the other way around. Blood tests are a tool, not a crystal ball #doctor #trending #followme #functionalmedicinepractitioner #functionalmedicinedoctor
Doctor Leen
Region: GB
Friday 14 November 2025 15:08:11 GMT
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Ricky :
Most British people can’t get an appointment with a GP we’re at the back of the queue and then when we do, we’re dismissed as it’s nothing important
2025-11-15 05:27:23
165
Tony tugger :
Just a dr over here now sending every health anxiety sufferer over the edge with this information
2025-11-15 14:38:50
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Hey :
The GPs need to understand this misconception! Every time I go with a problem they do bloods says every thing is fine and send me away. If I argue it they look at me like I’m crazy.
2025-11-15 18:42:45
44
Safa :
I don’t understand the logic behind a routine blood test! Why not do a full blood count instead of having to go back to the GP 100 times.
2025-11-16 01:08:37
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fiddle_dee_dee :
so I'm 43, lightheaded and dizzy ever day, constant headaches, stomach is like a washing machine most days, had my bloods done, apparently I'm fine...
2025-11-15 12:31:12
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Zinnos :
What’s the logic behind a “routine” blood test? Why not always test for other matters which might not be suspected at that stage, for completeness and avoidance-of-doubt?
2025-11-15 04:12:02
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Waseem 🇬🇧 :
Yes but on the flip side Doctors will sometimes do the same ,, if you bloods are ok then they will send you home .. and sadly you have to wait for another symptom before further investigations can be done
2025-11-15 05:07:47
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Nessie Rider 🦡🦊 :
GPS are not fit for purpose these days
2025-11-15 18:13:55
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Michelle Haslam :
My stepmum had perfect blood tests every single time. She just died from bladder cancer
2025-11-15 12:56:10
22
Nicole🫶🏻 :
My health anxiety did not need this today
2025-11-16 18:19:25
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user6845149533341 :
Why do you not do a full thyroid panel on thyroid patients especially with hashimoto🤦🏽♂️
2025-11-15 11:26:13
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Scotland🏴 :
My daughter been ill for months, went docs, said nothing wrong with her after doing full blood tests, went to a new GP when she moved home, same blood test but he called her to say she’s severely lacking VitD, she could have been on the correct medication months ago,
2025-11-14 22:30:11
12
𝔸𝕝𝕝𝕪 :
It’s awful now in Bristol you need to be close to 💀 for any decent healthcare
2025-11-16 23:59:06
4
user35786425680 :
But why GPs never ever even offer follow up tests after bloods come back normal. They just say ‘you’re fine’. People try to make GPs look better but NHS GPs are the most dismissive people ever
2025-11-15 23:51:48
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Maxvid :
This is a misconception among GPs, not average people. GPs are the ones who act like a basic panel would show cancer.
2025-11-16 16:39:12
3
Elle Re :
"people" ... that's the GP who always says that not the client! gps tests your blood and if they can't find anything they just say ah well never mind
2025-11-15 05:38:02
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Louise Copland Genx :
Must of mine came back borderline she did full bloods cose I lost a stone in weight in a week now am pathway for cancer had st scan got a big liver going for ultrasound and endoscopy my doctor was fantastic from the start
2025-11-15 01:45:29
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PipinParis ☕🏴 :
I had a Doc tell my Dad, the tests are negative so nothing is wrong. To me, that just meant he hadn't yet done the right tests.
It was actually Guillain Barré and my Dad nearly died.
2025-11-16 16:31:41
2
Winchesterdays :
Do any signs of cancer show up on blood tests?
2025-11-15 08:05:53
2
🐢 :
problem is most GPs will see those are fine (read withing range and not optimal for you/dont consider if youre trending up or down) and tell you youre fine, dissmiss it as all in your head and send you home.
2025-11-16 16:12:41
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KediCat2017 :
I had a serious stomach bleed last year. Routine blood test in A & E was negative. I was sent home on 5 separate occasions only to be eventually rushed into hospital. I could have died! The service and care I received was terrible. I was traumatised by the experience, mentally scarred.
2025-11-16 14:45:57
4
JoJo :
why does my doctor always tell me im ok because my bloods came back satisfactory then??
nothing is ever taken further after my bloods
2025-11-15 23:02:29
0
mata19696 :
GPs aren’t always curious enough.
2025-11-16 21:30:23
3
Elodie :
I’m tired all the time and have been ever since i have birth 2 years ago, doctors can’t figure out why, i also feel like all my muscles are weak and sore and struggling with insomnia
2025-11-15 09:40:21
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