how many mL of blood are you going to extract if the patient is an infant?

Question

please answer if you really know.. thank you

Answer 1

That depends on what test is to be performed. Some test assays require just a drop of blood which is usually taken from the infant heel.Specimen tubes for infants are small. Depending on what blood test is to be performed, the amount varies from 0.5 ml to 5 ml.

Routine laboratory investigations usually require 1 ml to 1.5 ml of blood sample collected in microtainers. Blood cultures may requires at least 2 ml of blood. Initial laboratory investigations (includes many tests) may sometimes require up to 7.5 ml of blood.

Answer 2

It depends on what the blood is being tested for, and the size and health of the infant.

I used to draw blood to earn money while in medical school, and the NICU babies were the worst. We needed less than a cc, but their poor little scarred heels were reluctant to give it up.

A robust infant is capable of sparing more blood.

Answer 3

It depends on the test(s) that have been ordered. The more tests ordered the more blood is required.