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You are here : 3-RX.com > Medical Encyclopedia > Tests and Exams > Troponin I

Troponin I

Alternate Names : Troponin

Overview & Description | Preparation & Expectations | Results and Values

This test measures the amount of troponin I in the blood. Troponin I is a protein found in the heart muscle fibers. It is used to help a doctor diagnose a heart attack.

Who is a candidate for the test?

If a doctor suspects a heart attack has occurred or is in the process of occurring, he or she may order this test.

How is the test performed?

In order to measure the amount of troponin I in the blood, a blood sample is taken from a vein on the forearm or hand. First, the skin over the vein is cleaned with an antiseptic. Next, a rubber tube called a tourniquet is tied around the upper arm. This enlarges the veins in the lower arm by restricting blood flow through them. A fine needle is gently inserted into a vein, and the tourniquet is removed. Blood flows from the vein through the needle and is collected in a syringe or vial for testing in the laboratory. After the needle is withdrawn, the puncture site is covered for a short time to prevent bleeding.


   

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Troponin I: Preparation & Expectations

Author: Melinda Ratini, DO, MS
Reviewer: Kathleen A. MacNaughton, RN, BSN
Date Reviewed: 06/10/02



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