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Can starvation cause decreased blood flow when taking blood sample?

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The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

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iCliniq medical review team

Published At August 7, 2018
Reviewed AtDecember 5, 2023

Patient's Query

Hi doctor,

I want to clarify one thing which has fed a lot of fears within me. When I gave the blood sample today and when the lab technician pierced the needle, the blood flow was very slow and stopped at one time. So the lab technician has squeezed my hand so many times to allow the blood flow into the syringe. I am very surprised by this scenario and fear a lot. And I am thinking like if he reused needle contaminated with any blood and clot and that is why it has not allowed blood to flow fast. Does this scenario happen to anyone? Because I have never seen this to me. I did not eat anything for the last 15 hours. Could this be the reason? But I am sure that they opened the new syringe or needle pack, but I do not know why blood still did not flow properly. This situation is fearing me a lot. Please let me know if this is an abnormal situation. But one request, please explain in detail as this is the most I am fearing at this moment.

Hi, Welcome to icliniq.com.

Regarding your query, it is not contaminated with clots. It has three possible scenarios: The laboratory technician is not skilled. So, had a problem to identify the course of the vein. The veins used for blood collection are not always straight. The technician would have selected vein that was tortuous which led to decreased flow during collection which caused him to squeeze for blood. Alternatively, he could have made it straight for easy flow. Bad selection of needle. Maybe the needle selected had a manufacturing defect or of small size which made difficult in sucking the blood. So, mostly the problem with experience of technician caused the problem.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Kiran Anaparthi
Dr. Kiran Anaparthi

HIV/AIDS specialist

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