TROPONIN I TESTDr. Abhishtita MudunuriLast Updated on 21st March 2022
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What is the Troponin I test used for?
The Troponin I test is helpful in the diagnosis and monitoring of heart injury or an attack. When a patient exhibits symptoms of a heart attack, such as chest discomfort, fast heart rate, nausea, vomiting, exhaustion, and shortness of breath, this test is recommended.
Troponin I is the preferred test for a suspected heart attack or to monitor angina (a disorder that produces chest pain by limiting blood supply to the heart). It is more specific to heart damage, and the levels remain elevated for a longer period of time. It aids in preventing further heart damage and reducing the risk of future heart attacks.
Since it is an accurate test, Troponin I is unique to cardiac muscle; skeletal muscle injury does not affect the test. Also, injections, accidents, and medicines that can harm muscles do not affect cardiac troponin levels.
This test may also be utilized if you have been diagnosed with a heart attack and are being treated at a hospital. Typically, testing is conducted twice or more throughout 24 hours. This is done to examine if the troponin levels change over time.
What is included in the Troponin I test?
Troponins are special proteins in skeletal and cardiac muscle fibres that control muscular contraction. Troponin levels are used to detect heart injury by measuring the quantity of cardiac-specific Troponin in the blood.
Even if just slightly elevated, a high troponin level may suggest heart injury. When a person has highly elevated troponin levels and, in particular, a spike and/or fall in the findings of a series of tests performed over several hours, the individual has likely had a heart attack or other cardiac injury.
Troponin levels in the blood can rise within 3 to 6 hours of a heart attack and stay high for 10 to 14 days. Moreover, raised Troponin levels in angina patients indicate worsening illness and a significant risk of heart failure. However, the Troponin I test should not be used as the sole method of diagnosing heart disease. Instead, it should be paired with a physical examination, an ECG, 2D Echo and other factors.
Procedure for Troponin I test
The procedure for performing the Troponin I test is absolutely simple.
- Our technician will arrive at your doorstep to collect the sample.
- Then, after cleaning the skin surface with antiseptic, a blood sample will be drawn by our technician from the vein in the forearm using a needle.
- After the needle is positioned, a small amount of blood is collected into a test tube or vial. When the needle goes in or out, you may feel a slight sting. This normally takes under five minutes.
- Then with the help of the latest technology and state-of-the-art machinery, the lab technician will evaluate the blood sample.
- Once the analysis has been done, the test results will be made available on the MFine app.
How to prepare for the Troponin I test?
It is recommended that the patient notifies the practitioner of the following before the testing:
- Your medical history, any previous injuries or heart conditions, and medications are currently being taken.
- Your dietary regime and dietary restrictions that you follow like not eating dairy or following a strict vegan diet etc.
Based on this information, the practitioner may advise you on any dietary restrictions and drug usage that must be observed. These are essential to obtain accurate and proper results.
Note: On the day of testing, it is suggested that you wear comfortable clothes that allow easy access to your forearm.
Things to consider after the Troponin I test is complete
Once the test results become available, consult the doctor for further recommendations. Abnormal results require immediate attention, so contact your health practitioner as soon as your results come. Please don’t self-diagnose your health.
What types of conditions can the Troponin I test detect?
The Troponin I test aids in the detection and monitoring of heart injury. Troponin I is the preferred test for a suspected heart attack because it is more specific to heart damage and stays raised for longer.
Apart from a heart attack, elevated troponin levels can also help in the diagnosis of
- Chronic kidney disease or kidney failure
- Pulmonary embolism
- Infection of the heart
How much does the Troponin I test cost?*
The cost of the test may vary from city to city. Though it certainly depends on the city, quality, and availability. However, the average cost of the test is between Rs. 500 and Rs. 2,000.
*Disclaimer: The value varies based on location, time, and your preferred lab partner.
How long does it take to get the results for the Troponin I test?
You can expect to get the results of the Troponin I test within 24 to 48 hours after the sample is collected. However, in certain cases, depending on the location, medical advice, and preferred lab partner, it may take longer.
What do abnormal Troponin I test results indicate?
Even a slight boost in troponin levels frequently indicates damage to the heart. Troponin levels that are extremely high indicate a heart attack. Within 6 hours of having a heart attack, most patients have elevated troponin levels. Almost everybody who has had a heart attack will have elevated levels after 12 hours.
Troponin levels may stay elevated for 1 to 2 weeks following a heart attack. Troponin levels may also be elevated as a result of:
- Abnormally rapid heartbeat
- High blood pressure in the arteries of the lungs (pulmonary hypertension)
- A blood clot, fat, or tumour cell blockage of a lung artery (pulmonary embolism)
- Heart failure with congestive edema
- Spasm of the coronary arteries
- Inflammation of the heart muscle caused by a virus (myocarditis)
- Trauma to the heart, such as a car accident
- Heart muscle deterioration (cardiomyopathy)
- Chronic kidney disease
Troponin levels may also arise as a result of some medical treatments, such as:
- Angioplasty/stenting of the heart
- Defibrillation of the heart or electrical cardioversion (purposeful shocking of the heart by medical personnel to correct an abnormal heart rhythm)
- Coronary artery bypass surgery
- Heart radiofrequency ablation
Normal Levels and Range
- Troponin-I levels in the body are generally less than 0.04 ng/mL.
- Normally, your blood should have no detectable troponin or a very low level—below 0.04 nanograms per millilitre (ng/ml).
- A troponin level between 0.04 ng/ml and 0.39 ng/ml frequently implies a cardiac issue.
- A troponin level of more than 0.4 ng/ml indicates a possible heart attack.
Troponin-I levels that are abnormal are generally associated with pulmonary hypertension, angina, myocardial infarction, pulmonary embolism, and congestive heart failure.
Troponin I levels that are abnormal are grounds for considerable worry. It is critical to speak with a cardiologist as soon as possible to begin the necessary treatment. Patients may be encouraged to take oral medications or undergo modest heart treatments such as angioplasty.
Disclaimer: Please consult with your doctor to interpret the test reports.
Is Troponin I a definitive test?
Troponin I is considered one of the best tests to diagnose a heart attack or cardiac injury. Troponin I tests are effective because they can detect heart damage even when only a trace of Troponin is present. The tests are so sensitive that the error rate is less than 10%.
Though you may require additional tests along with this, it is always advisable to visit the doctor to understand the problem correctly.
How to read the Troponin I report?
Normal Levels and Range
- Troponin I levels should be less than 0.04 ng/mL.
- Troponin concentrations over the Troponin normal range of 0.40 ng/mL may signify a cardiac injury. Please see a doctor at the earliest if your levels are elevated.
- Troponin values ranging from 0.04-0.39 ng/mL may necessitate a series of Troponin tests. However, over 0.40 ng/mL is considerably outside the Troponin normal range and necessitates emergency medical attention.
Normal Range Of Troponin Levels
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Why to book the Troponin I test?
A troponin test is usually requested when a person with a suspected heart attack arrives at the emergency room or the hospital. This is followed by a series of troponin tests over several hours.
A heart attack may be suspected when a person exhibits the signs and symptoms indicated below, and tests may be performed. It is important to note that not everyone will feel chest pain, and women are more prone than males to have unusual signs and symptoms.
- Pain, discomfort, and/or pressure in the chest (most common)
- Rapid heart rate, a missed beat
- Breathing difficulties and/or shortness of breath
- Vomiting and nausea
- Sweating coldly
- Excessive tiredness
- Other areas of pain include the back, arm, jaw, neck, and stomach.
A troponin test may be ordered in patients to
- Detect the injury to the heart
- Helps in the diagnosis of heart attack and rules out other conditions with similar signs and symptoms
- Also, this test is performed in patients with stable angina when the symptoms worsen or when a person is at rest, but symptoms appear, or the treatment no longer alleviates symptoms.
These symptoms indicate that the angina is becoming unstable, increasing the likelihood of a heart attack or other significant heart disease in the near future. So getting a Troponin test at the right time can be very beneficial.
Troponin I test at home – how does it work?
The Troponin I test is just like any other blood test. A lab technician visits your home when you book your tests through the MFine app. The lab technician first cleans the arm and then inserts a syringe into a vein. The required amount of blood is then taken into a vial. The lab technician then removes the needle and places cotton wool or a bandage over the prick.
Are there any risks involved with Troponin I?
Having a blood test poses relatively no danger. You may experience some pain or bruising where the needle was inserted, but most symptoms will subside soon.
What can affect the results for Troponin I?
If this test is performed too soon after a heart attack, it may result in a false negative. Cardiac Troponin rises within a few hours of heart-cell death and can take many days to remove from the bloodstream. Therefore, your healthcare professional may need to measure it many times within a few hours of the onset of symptoms.
Other than a heart attack, cardiac enzyme levels might arise for various reasons. For example, sepsis, a form of blood infection, can result in high troponin levels. The same can be said for atrial fibrillation, a common cardiac rhythm issue. Other factors that may have an impact on your test results include:
- Pulmonary blood clot
- Heart failure, whether acute or chronic
- Brain harm caused by amyloidosis
- A cardiac contusion as a result of a chest wall injury
- Cardioversion for atrial fibrillation or atrial flutter chemotherapy
- End-stage kidney disease coronary angioplasty defibrillation for ventricular fibrillation or tachycardia
- Open cardiac surgery for myocarditis or myopericarditis
- Cardiomyopathy, radiofrequency catheter ablation of arrhythmias, rhabdomyolysis, and severe exercise are other cardiac disorders.
- Valvular heart disease
Because other conditions might increase cardiac enzyme levels, your doctor will not use enzyme levels alone to identify a heart attack.
To confirm a diagnosis, they might utilise an electrocardiogram and symptoms.
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Frequently Asked Questions - FAQs
Is the lab technician coming for Troponin I test sample collection vaccinated?
Yes. Our lab technicians are fully vaccinated. Further, they also ensure safety by wearing mask gloves and frequently sanitizing themselves during the sample collection.
Does MFine provide the interpretation for the results along with the reports?
Yes, MFine provides the interpretation for the result along with the reports. You can also avail a free medical consultation with a doctor to understand your reports accurately. The doctor will also advise and prescribe medicines, if required, based on the results.
How can I download my Troponin I test report?
- Log in to MFine
- Go to your profile
- Click on Attachment and Reports
- Click on Lab Report
- Download the report
Are there any discount offers running on Troponin I test?
Usually, you can avail yourself up to a 50% discount on Troponin I through MFine. However, the discount and test price may vary based on lab partner and location.
What are the symptoms associated with heart diseases?
Some of the signs and symptoms of heart disease are listed below:
- Pain in the chest or discomfort in the chest
- Pain in the left arm left side of the back or jaw
- Symptoms of respiratory distress
- Breathing problems that appear suddenly
- Vomiting or Nausea
- Extreme exhaustion
- Sweating excessively
- Unexplained fatigue
If these symptoms do not improve with rest and medicine, it is necessary to have some diagnostic tests performed. Most hospitals create the ‘cardiac risk marker profile.’ Troponin I testing is one of the most important tests in this diagnosis, although you may also require additional tests.
Is a doctor's prescription required for the Troponin I test?
Mostly, Troponin I tests are undertaken on the doctor’s advice since this test may also be often taken if you have been diagnosed with a heart attack and are being treated at a hospital. Though a prescription is not necessary, it is advised to consult the doctor before undergoing the test.
How to prevent heart diseases?
Heart attacks can be uncertain and, at times, cannot be prevented. However, you can take steps to avoid having a heart attack in the first place. These include eating well, staying physically active, not smoking, and getting enough sleep.
The following lifestyle adjustments can aid in the treatment and prevention of heart disease:
- Eat a healthy diet. Maintaining a heart-healthy diet is critical for avoiding heart disease
- Regular exercise is essential
- Maintain healthy blood pressure
- Maintain a healthy level of cholesterol
- Maintain healthy body weight
- Limit your alcohol consumption
- Do not smoke
- Control your stress/tension
- Sleep well
Do troponin levels stabilize?
Troponin levels in the blood normally begin to rise within 2 to 3 hours of the onset of chest discomfort. The levels continue to rise till a peak is reached, which usually takes between 12 and 48 hours. The troponin level will subsequently begin to decline over the next 4 to 10 days, returning to normal.
Can anxiety affect troponin levels or be a reason for rise in levels?
Yes, Acute chest pain, electrocardiographic alterations, and a momentary elevation in the number of cardiac biomarkers such as troponins are all indications of stress-induced cardiac muscle issues.
What do elevated troponin-I levels indicate?
Elevated troponin-I levels are associated with pulmonary arterial hypertension, angina, myocardial infarction, pulmonary embolism, and congestive heart problems.
What is the significance of this test?
Troponin-I levels in the blood can be found 3-6 hours after the onset of chest discomfort and can remain increased in the blood for 5-9 days after the pain. This is helpful in spotting a possible heart attack.
Disclaimer: The content is uniquely informative and is meant for educational use. Kindly use the content only in consultation with an appropriate certified or registered healthcare provider.