Definition
This is a test that measures the amount of ethylene glycol in blood.

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 collected in an air-tight vial or a syringe. During the procedure, the band is removed to restore circulation. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.

For an infant or young child, the area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.

How to prepare for the test
Adults:
There is no special preparation.

Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child’s age, interests, previous experience, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child’s age:

 
• infant test or procedure preparation (birth to 1 year)  
• toddler test or procedure preparation (1 to 3 years)  
• preschooler test or procedure preparation (3 to 6 years)  
• schoolage test or procedure preparation (6 to 12 years)  
• adolescent test or procedure preparation (12 to 18 years)

How the test will feel
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.

Why the test is performed
This test is used to test for the presence of ethylene glycol in the blood. People sometimes drink ethylene glycol mistakenly or on purpose as a substitute for alcohol. Its presence in blood and body fluids can cause several metabolic (osmolality and electrolyte) disturbances.

Normal Values
There should be no ethylene glycol present in the blood.

What abnormal results mean

 
• possible poisoning

What the risks are

The risks associated with having blood drawn are:

 
• excessive bleeding  
• fainting or feeling lightheaded  
• hematoma (blood accumulating under the skin)  
• infection (a slight risk any time the skin is broken)  
• multiple punctures to locate veins

Special considerations
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

Medical Encyclopedia

All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.