What is an acetaminophen level test ?

This test measures the amount of acetaminophen in your blood. Acetaminophen is a medicine used in many over-the-counter (OTC) and prescription medicines. It is used to relieve pain and reduce fever. It comes in liquid, chewable, capsule, or pill form. It is found in many brand name medicines, including Tylenol and Excedrin. Outside the U.S., it’s called paracetamol. Acetaminophen can also be combined with other active ingredients in medicines that treat allergy, cough, colds, flu, and sleeplessness.

What is it used for ?

The test is used to find out if you or your child has taken too much acetaminophen. It may also be used to monitor how well the treatment of an overdose is working.

Why do I need an acetaminophen level test ?

Your provider may order this test if you or your child has symptoms of an overdose. When you take too much of the medicine, your liver cannot process the excessive dose and it can build up in your body. Symptoms may happen as soon as two to three hours after taking the medicine but can take as long as 12 hours to appear.

Symptoms in adults and children are similar and may include:

1.Nausea and vomiting
2. Diarrhea
3.Abdominal (belly) pain
4.Loss of appetite
5.Trouble breathing
6.Fatigue
7.Irritability
8.Sweating
9.Jaundice, a condition that causes your skin and eyes to turn yellow
Acetaminophen overdose can be a life-threatening emergency if not treated quickly. If you think you or your child has taken too much acetaminophen, or you notice early symptoms of an acetaminophen overdose, call 911 or go to the nearest emergency room.

What happens during an acetaminophen level test?

A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.