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A member asked:

Every time i get a blood test they can't find a vein. what causes this?

A doctor has provided 1 answer
Dr. Valerie Cacho answered

Specializes in Sleep Medicine

Dehydration: Dear Myra, If you are dehydrated it may be difficult for someone to find a vein. Some people also have very small veins as their anatomy. Please drink plenty of water prior to having a blood draw.

Answered 8/9/2018

1.3k views

Thank

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