'I'm a doctor and patients need to know blood tests don't detect this condition'

'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'

When we feel unwell and don't know why, a blood test is often the first step in figuring out what's wrong. But, despite what some may think, these tests don't actually identify every possible major health problem , including the one many will be most worried about - cancer .

London GP Dr Leen Tannous, who regularly posts health tips on her TikTok account, recently shared a video busting myths about why doctors carry out blood tests. She said: "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 rou