For most people having blood taken is not a problem, just a minor inconvenience. Others feel anxious and need some strategies to help them cope. As common and as quick as it is, giving a blood sample is the procedure that causes greatest apprehension.
For a few people the physical condition of their veins makes the procedure hard. This might be because their veins are sore from intravenous (IV) therapy, scarred from frequent venipunctures, or just hard to find and use for blood collection.