What Are Insulin Vials?
An insulin testis a blood test that measures the amount of insulin, a hormone that regulates blood sugar.
How the test is performed
Blood is drawn from a vein on the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and an elastic band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood.
A needle is inserted into the vein, and the blood is...
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