Hemoglobin

Hemoglobin is a protein in red blood cells with the purpose of carries oxygen. A blood test can say to how much hemoglobin you have in your blood.

Blood is taken from a vein, normally from the in the interior of the elbow otherwise the back of the hand. The puncture place is cleaned with antiseptic, along with an elastic band or else blood pressure cuff is placed in the region of the upper arm to apply pressure and limit blood flow through the vein. This causes veins to fill up with blood.

A needle is penetrated into the vein, and the blood is collected in an air tight vial otherwise a syringe. During the process, the band is detached to bring back blood flow. One time the blood has been collected, the needle is detached, and the puncture site is enclosed to prevent any bleeding.

In baby or young children, the region is wash with antiseptic and punctured with a sharp needle or else a lancet. The blood can be collected in a pipette on a slide, onto a test strip, or else into a small container. Cotton otherwise a bandage may be applied to the puncture spot if there is any continuous bleeding.