Cardiac Troponin I (Serum) with 24-Hour Recorded Peak
This test measures the levels of cardiac troponin I, a protein released when heart muscle is damaged, along with a 24-hour recording of its highest peak value.
["Assesses heart injury risk by tracking troponin levels over time."]
Key facts at a glance
- LOINC
- 60972-7
- Short code
- ST amp.precordial lead
- Synonyms
- ST amp.precordial lead
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ekg
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters for Your Heart Health
Troponin I is a protein found only in heart muscle cells. When the heart is injured—such as from a heart attack—these cells release troponin into your bloodstream. Measuring troponin helps doctors determine if you’ve had heart damage and how severe it is. The 24-hour peak recording helps track the most intense release of troponin after injury, which can provide clearer insights into your condition.
How the Test Works: Blood Sample and Measurement
A small blood sample is taken from a vein, usually in your arm. The lab then analyzes the serum portion of your blood for troponin I levels. The test also records the highest troponin value observed within the past 24 hours, which can help identify the peak of heart injury if it occurs.
When You Might Need This Test
Your doctor may order this test if you’re experiencing symptoms like chest pain, shortness of breath, or other signs of heart problems. It’s also used after a suspected heart attack to confirm damage or monitor recovery. Some patients with chronic heart conditions may have this test periodically to check for worsening heart function.
What to Expect Before the Test
There are usually no special preparations needed. You may have a small bandage on the site where the blood is drawn, but otherwise, you can eat, drink, or take your usual medications as usual. If you’re on blood thinners, let your doctor know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Cardiac Troponin I (24h Peak)
Frequently asked questions
How long does it take to get results from this test?
Can I eat or drink anything before this test?
Will this test be done if I already have a high troponin level?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy