How many vials of blood are needed for CBC?

Answered by 1 Apollo Doctors

Dr Siri Nallapu

General Practitioner

MBBS
5+ Yrs

Consult Now

Only one vial is needed

Dr. Siri Suggests...

Take a Renin Direct Test or Take a Vitamin D (1,25 Dihydroxy Cholecalciferol) Test

Book Renin Direct Test Book Vitamin D (1,25 Dihydroxy Cholecalciferol) Test

Answered 24/07/2025

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What happens if one's blood platelet count reaches zero?

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I have been experiencing fever that comes and goes with chills. After taking paracetamol and antibiotics, the fever subsides. My blood test shows platelets at 1.6 lakh/cmm. Could you please advise if this could be dengue, or what might be causing these symptoms?

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At what level of platelet count do we have to worry?

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.