High troponin WITH chest pain - emergency
- Chest pain or pressure, sweating, or pain to the arm or jaw
- A rising troponin and new ECG changes
- Treated as a heart attack until proven otherwise
- Action: call 911 - this is a same-minute emergency
Names & Terms You Will Hear
Plain-language meanings for the terms your care team may use.
| Term | Meaning |
|---|---|
| Troponin | A protein found inside heart-muscle cells. When the muscle is injured, troponin leaks into the blood. A blood test measures it. It is the most specific blood marker we have for heart-muscle injury. |
| Elevated (high) troponin | A troponin level above the normal cutoff. It means heart muscle was injured. It is a starting clue, not a diagnosis - many things besides a heart attack can raise it. |
| High-sensitivity troponin (hs-troponin) | A newer, very sensitive version of the test. It can pick up tiny amounts of injury and small changes between draws. That makes it powerful, but it also means small high readings are common and need careful reading. |
| Myocardial injury | The general term for any damage to heart muscle that raises troponin. A heart attack is one cause of myocardial injury - but not the only one. |
| Myocardial infarction (heart attack) | Heart-muscle injury caused by not enough blood flow - ischemia. To call a high troponin a heart attack, doctors need a rising or falling pattern PLUS signs of ischemia, such as symptoms or ECG changes. |
| Type 1 heart attack | The classic heart attack: a cholesterol plaque in a heart artery cracks, a clot forms, and blood flow is blocked. This is the kind a stent or clot-busting medicine is built to treat. |
| Type 2 heart attack | Heart injury from a supply-and-demand mismatch - the heart muscle was starved for blood by something else, like a very fast rhythm, very low blood pressure, severe anemia, or a major illness. The fix is to treat that other problem. |
| Rise-and-fall pattern (serial troponins) | Checking troponin more than once, a few hours apart, to see whether it is climbing or falling. A clear rise-and-fall points toward a sudden event like a heart attack. A flat, steady-high level points toward a long-standing cause. |
| Serial troponins | Another name for repeat troponin tests over a short window. Many hospitals use a 0-hour and a 1-hour or 3-hour draw to read the trend quickly. |
| ECG (EKG) | A quick, painless tracing of the heart's electrical signals. Paired with troponin, it helps tell a blocked-artery heart attack from the other causes of a high troponin. |
| Echocardiogram (echo) | An ultrasound of the heart. It shows how well the heart squeezes and whether a wall is moving poorly - clues to where and why the muscle was injured. |
| Cardiac catheterization (coronary angiogram) | A thin tube is guided to the heart arteries and dye is injected so we can see narrowings directly. It is used when we think a blocked artery (a type 1 heart attack) is the cause. |
| Pulmonary embolism (PE) | A blood clot that travels to the lungs. It strains the right side of the heart and can raise troponin - a high troponin without a blocked heart artery. |
| Sepsis | A severe, body-wide response to infection. It stresses the whole body, including the heart, and is a common reason for a high troponin in very sick patients. |
Read this first. A high troponin means heart muscle was injured - but it does not always mean a heart attack. Many other things can raise it. The job of the next few hours is to find out why, using repeat blood tests, an ECG, and your symptoms. One number is a clue, not a verdict.
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
EMERGENCY RULE - call 911. Chest pain or pressure with a high troponin is a 911 emergency until proven otherwise - especially with sweating, nausea, or pain into the arm, jaw, neck, or back. Do not wait to see if it passes, and do not drive yourself. Call 911. Minutes of heart muscle are worth saving.What Is Your Troponin Was High?
- Troponin is a protein that lives inside your heart-muscle cells. When heart muscle is injured, troponin leaks into the blood. A simple blood test measures how much is there.
- A high troponin tells us one thing for sure: heart muscle was injured. It does NOT tell us, by itself, WHY. That is the question the next few hours are built to answer.
- The most important message: a high troponin does NOT always mean a heart attack. A heart attack is one cause - but a fast or irregular rhythm, a weak heart, a blood clot in the lungs, kidney disease, a severe infection, heart inflammation, intense exertion, or a recent procedure can all raise it too.
- Newer high-sensitivity tests can detect very tiny amounts of injury. This is a good thing - it catches real problems early - but it also means small high readings are common and must be read with care, not panic.
- To call a high troponin a heart attack, doctors look for two things together: a rising or falling pattern across repeat tests, AND signs that the heart was starved for blood - such as your symptoms or changes on the ECG.
- So a single high number is a clue, not a verdict. Your doctor reads it alongside your symptoms, your ECG, your other tests, and how the number changes over a few hours.
Common Causes of a High Troponin - the Pattern and What We Check
| Cause | Troponin pattern | What we check |
|---|---|---|
| Heart attack (blocked artery) | Rises, then falls | ECG, repeat troponins, often a heart catheterization |
| Fast or irregular rhythm | Mild rise, often falls with rate control | ECG / heart monitor, treat the rhythm, repeat troponin |
| Heart failure (weak heart) | Mildly high, can be steady | Echo, BNP blood test, fluid and medicine review |
| Clot in the lungs (PE) | Mild to moderate rise | CT scan of the lungs, oxygen level, leg ultrasound |
| Kidney disease | Steady-high, barely changes | Kidney blood tests, compare with prior troponins |
| Severe infection / sepsis | Variable, tracks the illness | Treat the infection, support the body, recheck troponin |
| Myocarditis (inflammation) | Can be high and persistent | Echo, sometimes cardiac MRI, monitor closely |
| Intense exercise / strain | Short rise, settles on its own | Repeat troponin, reassure if it falls and no symptoms |
When a High Troponin IS a Heart Attack
- The picture: a high troponin that rises and then falls, together with chest pain or pressure and often new changes on the ECG. That combination is what defines a heart attack - not the troponin alone.
- Type 1 - a blocked artery: a cholesterol plaque in a heart artery cracks, a clot forms, and blood flow stops. This is the classic heart attack a stent or clot-busting medicine is built to treat.
- Type 2 - supply and demand: the artery may not be fully blocked, but the heart muscle was starved because demand outran supply - a very fast rhythm, very low blood pressure, severe anemia, or a major illness. The fix is to treat that cause.
- Both are real heart attacks and both raise troponin, but the treatment differs. Type 1 often goes to the cath lab; type 2 is treated by fixing the underlying problem.
- The emergency: a large heart attack with certain ECG changes (a STEMI) is treated within minutes, opening the artery as fast as possible. This is why chest pain plus a high troponin is always a 911 situation.
- The hopeful part: caught early, much of the heart muscle can be saved. Speed matters - which is the whole reason for the emergency rule.
When a High Troponin Is NOT a Heart Attack
- A fast or irregular rhythm: a racing heart (like atrial fibrillation with a fast rate) can outrun its own blood supply and nudge the troponin up. It often settles once the rhythm is controlled.
- A weak or failing heart: a heart-failure flare strains the muscle and can raise troponin without any new blocked artery. The level is often mildly high and fairly steady.
- A blood clot in the lungs (pulmonary embolism): the clot strains the right side of the heart and can raise troponin - a high troponin with clear heart arteries.
- Kidney disease: the kidneys help clear troponin, so when they do not work well the level can read high and steady, even with no new event. We compare it with your prior troponins.
- Severe infection or sepsis: a body-wide illness stresses the heart along with everything else. The troponin tracks how sick the person is, not a blocked artery.
- Myocarditis, intense exertion, or a recent procedure: heart inflammation, a marathon-level effort, or recent heart surgery can each raise troponin. The cause - not the number - decides what to do.
Why It Matters
- It matters because troponin is the most specific blood signal we have for heart-muscle injury. A high level is never ignored - it always earns a careful look.
- But it matters HOW it is read. Treating every high troponin as a heart attack leads to tests and worry that some people do not need. Treating a real heart attack as 'probably nothing' is dangerous. Sorting the two apart is the whole point.
- The pattern over time matters more than one number. A troponin that rises and then falls points toward a sudden event. A troponin that sits a little high and barely moves points toward a long-standing cause, like kidney disease or a stable weak heart.
- Your symptoms matter most of all. A high troponin WITH chest pain or pressure is an emergency until proven otherwise. A high troponin with no symptoms, found on a routine test, is usually worked up calmly.
- It matters for the plan. A blocked artery (type 1) may need a stent. A supply-demand injury (type 2) is fixed by treating the cause - slowing a racing rhythm, treating an infection, or supporting blood pressure. Same blood test, very different plans.
The pattern beats the number. A troponin that rises and then falls across a few hours points toward a sudden event like a heart attack. A troponin that is steady-high and barely moves points toward a long-standing cause, such as kidney disease or a stable weak heart. This is why your doctor repeats the test instead of acting on one value.
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
How Worried Should I Be? - Reading a High Troponin in Context
High and rising - needs a prompt workup
- The level is climbing between draws
- Some symptoms or a clear other illness present
- Could be a type 1 or a type 2 heart injury
- Action: hospital workup - repeat troponins, ECG, echo
Mildly high, has a known cause
- A small rise that fits a fast rhythm, infection, or strain
- Often falls as the other problem is treated
- Read together with symptoms and the pattern
- Action: treat the cause, recheck the troponin
Steady-high, no new symptoms
- Barely changes between draws - not a rise-and-fall
- Often kidney disease or a stable weak heart
- Compared with your prior troponin levels
- Action: usually a calm outpatient workup, not an emergency
Risk Factors
Knowing your personal risks helps your care team take extra precautions.
| Risk Factor | Why It Increases Risk |
|---|---|
| Heart causes that often raise troponin | A heart attack from a blocked artery (type 1). A weak or failing heart. Heart inflammation (myocarditis). A very fast or irregular rhythm. Heart failure flares. A recent heart procedure or surgery. |
| Causes outside the heart arteries that raise troponin | A blood clot in the lungs (pulmonary embolism). Severe infection or sepsis. Kidney disease. Very high or very low blood pressure. Severe anemia. A major non-heart illness or surgery. |
| Why kidney disease raises troponin | Healthy kidneys help clear troponin from the blood. When the kidneys do not work well, troponin can build up and read a little high even with no new heart attack. The clue is a steady level that barely changes between draws. |
| Why intense exercise can raise troponin | After a marathon or another long, hard effort, troponin can rise for a short time in healthy people. It usually settles on its own. We read it together with symptoms and the rise-and-fall pattern. |
| What makes a high troponin more likely to be a heart attack | Chest pain or pressure, especially with sweating, nausea, or pain into the arm or jaw. A clear rise-and-fall pattern. New ECG changes. Several heart-risk factors - diabetes, smoking, high blood pressure, high cholesterol, family history. |
| What makes a high troponin more likely to be another cause | No chest symptoms. A level that is steady-high and barely moves between draws. A clear other illness already present - a fast rhythm, an infection, a clot in the lungs, or known kidney disease. |
Treatment Options
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
- The first step is not a treatment - it is to find the cause. Your doctor repeats the troponin in a few hours, reads the ECG, asks about your symptoms, and often orders an echo. The cause decides the treatment.
- If the cause is a blocked artery (a type 1 heart attack), the treatment opens the artery. That can mean a heart catheterization with a stent, and blood thinners. A large heart attack with certain ECG changes is treated as an emergency, within minutes.
- If the cause is a supply-demand mismatch (a type 2 injury), the treatment fixes the underlying problem - slow a racing heart, treat the infection, support low blood pressure, fix severe anemia. The heart usually recovers as the other problem is treated.
- If the cause is heart inflammation (myocarditis), the treatment is rest, close monitoring, and medicines aimed at the inflammation and at supporting the heart while it heals.
- If the cause is a blood clot in the lungs (pulmonary embolism), the treatment is blood thinners, and in severe cases clot-dissolving medicine.
- If the cause is a steady-high troponin from kidney disease or a stable weak heart with no new event, there may be no new emergency treatment at all - just good control of the heart and kidney conditions and follow-up.
- Whatever the cause, heart-protective basics often follow: control blood pressure, treat diabetes, manage cholesterol with a statin when indicated, and stop smoking. These lower future risk on every path.
- The plan always starts with the same calm question - WHY is the troponin high - and only then moves to the matching treatment. The blood test points the way; it does not pick the treatment by itself.
What Comes Next - the Tests That Sort It Out
- Repeat (serial) troponins: a second and sometimes third draw a few hours apart, to read the rise-and-fall pattern. Many hospitals use a 0-hour and a 1-hour or 3-hour test to decide quickly.
- The ECG (EKG): a quick, painless tracing that can show the pattern of a blocked artery. Paired with the troponin, it helps separate a heart attack from the other causes.
- An echocardiogram (echo): an ultrasound that shows how well the heart squeezes and whether a wall is moving poorly - a clue to where and why the muscle was injured.
- A heart catheterization (coronary angiogram): used when a blocked artery (type 1) is likely. A thin tube and dye show the arteries directly, and a stent can be placed in the same sitting if needed.
- Tests for other causes: a CT scan of the lungs for a clot, kidney blood tests, a BNP test for heart failure, or sometimes a cardiac MRI for inflammation - chosen to match the suspected cause.
- The thread through all of it: the goal is to find WHY the troponin is high, then treat that cause. The blood test points the way; it does not pick the treatment by itself.
Risks, Benefits, and Alternatives
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
Every choice has trade-offs. Use this table to start the shared decision conversation with your care team.
| Option | Risks | Benefits | Alternatives |
|---|---|---|---|
| Repeat (serial) troponins and an ECG vs acting on one number | Repeating the test and the ECG costs a few hours and a second blood draw - very low risk. Acting on a single number risks both over-treating a false alarm and missing a real heart attack. | Repeat testing is almost always the right call. The rise-and-fall pattern is what separates a sudden heart attack from a long-standing cause. A few hours of watching is safer than a guess. | If your symptoms are severe, we do not wait - we treat a likely heart attack right away while the tests are still running. |
| Heart catheterization (angiogram) vs a non-invasive workup | An angiogram has a small but real risk - about 1 to 2% for bleeding, vessel injury, a contrast reaction, stroke, or heart attack. A non-invasive workup (echo, monitoring, sometimes a CT or stress test) avoids that but is less exact about the arteries. | When the picture points to a blocked artery - a clear rise-and-fall, symptoms, ECG changes - an angiogram is the most direct answer and can place a stent in the same sitting. When the cause is clearly something else, a non-invasive path is safer. | Many people in the middle are watched with repeat troponins and an echo first, and only go to the cath lab if the picture firms up. |
| Treating the high troponin now vs treating the cause | There is no single pill for 'high troponin'. Treating blindly can mean blood thinners or a procedure someone did not need. Waiting too long to treat a real heart attack risks more heart damage. | The right move is to treat the CAUSE, fast. A blocked artery is opened. A racing rhythm is slowed. An infection is treated. A clot is thinned. The troponin falls as the real problem is fixed. | Treating the cause is almost always better than treating the number. The number is the alarm, not the fire. |
| Admitting to the hospital vs observation vs going home | Staying in the hospital allows close monitoring and fast treatment but carries the usual hospital downsides. Going home too soon after a real heart injury is dangerous. | A clear heart attack is admitted. A low-risk, steady-high troponin with a known cause and no symptoms may be watched briefly or managed as an outpatient. Most people land in a short observation window while the pattern is read. | The decision rests on your symptoms, the rise-and-fall pattern, the ECG, and your risk factors - not on the troponin number alone. |
Common Misconceptions
| Myth | Reality |
|---|---|
| A high troponin always means I had a heart attack. | No. A high troponin means heart muscle was injured. A heart attack is one cause - but a fast or irregular rhythm, a weak heart, a blood clot in the lungs, kidney disease, a severe infection, heart inflammation, or intense exertion can all raise it. The next steps sort out which one it is. |
| One high number is enough to make the diagnosis. | Usually not. Doctors look at the PATTERN across repeat tests - is the troponin rising and falling, or steady? - plus your symptoms and your ECG. A single value is a clue, not a verdict. That is why the test is often repeated in a few hours. |
| A high-sensitivity troponin means my heart is in worse shape. | Not by itself. High-sensitivity tests simply detect smaller amounts of injury than older tests. They catch real problems earlier, but they also pick up small, harmless-looking rises that must be read with care - not panic. |
| If my troponin is only a little high, it is nothing. | Not safe to assume. A small rise can still be a real heart attack, especially with symptoms. It can also be a steady-high level from kidney disease. The way to tell is to repeat the test and read it with your symptoms and ECG - never to ignore it. |
| A type 2 heart attack is not a real heart attack. | It is real heart injury, and it matters - but it has a different cause and a different fix. A type 1 attack is a blocked artery that may need a stent. A type 2 injury is the heart starved by another problem, like a fast rhythm or low blood pressure, which we treat directly. |
| Since my troponin is high but I feel fine, I can wait. | Be careful. A high troponin with NO symptoms is usually worked up calmly - but a high troponin WITH chest pain or pressure is an emergency until proven otherwise. If you have symptoms, do not wait. Call 911. |
| A high troponin means I will need a stent. | Often not. A stent treats a blocked artery (type 1). Many high troponins come from other causes that no stent can fix - a clot in the lungs, an infection, kidney disease, a fast rhythm. The treatment matches the cause, and many causes need no stent at all. |
Possible Complications
Knowing what can go wrong helps you spot problems early. Most complications are uncommon, especially with treatment.
| Where / What | What Can Happen |
|---|---|
| Missing a real heart attack (under-reacting) | Reading a real, rising troponin as 'probably nothing' risks more heart damage and a dangerous delay. We never wave off a high troponin - we read the pattern, the ECG, and the symptoms, and we act fast when they point to a blocked artery. |
| Over-testing a harmless rise (over-reacting) | Chasing a small, steady-high troponin with an angiogram nobody needs adds contrast, radiation, and procedure risk for no gain. We weigh how likely a heart attack was to begin with and often watch the pattern before any invasive step. |
| Living with the worry of an uncertain result | A high troponin that is not yet sorted out is frightening. The cure is information - repeat tests, an ECG, an echo, and a clear plan. Do not sit alone with a worrying result; call us and get the plan. |
| Heart-muscle damage from a large heart attack | A big type 1 heart attack can leave the heart weaker, which can lead to heart failure or rhythm problems later. Opening the artery quickly limits the damage. Cardiac rehab and good medicines protect what remains. |
| The risk from the underlying cause itself | A high troponin is often a sign of a serious underlying problem - a clot in the lungs, severe infection, or a failing heart. The troponin is the alarm; the real danger is the cause, which must be found and treated. |
| Risks of the confirming heart catheterization | When an angiogram is needed, it carries a small but real risk - about 1 to 2% in all for bleeding, vessel injury, a contrast reaction, stroke, or heart attack. We use it when a blocked artery is the likely cause and the benefit is clear. |
| Kidney strain from contrast dye in repeat testing | People with a high troponin from kidney disease are also the most sensitive to the contrast dye used in CT scans and angiograms. We pick the fewest, safest tests and protect the kidneys when dye is needed. |
Points to Know
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
If you remember nothing else, remember these key points.
- Troponin is a protein your heart muscle releases when it is injured. A high level is a real signal that earns a careful look - but it is not a diagnosis by itself.
- A high troponin does NOT always mean a heart attack. Many other causes - rhythm problems, heart failure, a clot in the lungs, kidney disease, infection, myocarditis, intense exertion, a procedure - can raise it.
- Doctors read the PATTERN, not one number. A troponin that rises and falls points toward a sudden event; a steady-high level points toward a long-standing cause.
- Troponin is read together with your symptoms and your ECG. To call it a heart attack, doctors need a changing pattern PLUS signs the heart was starved for blood.
- There are two kinds of real heart attack: type 1 (a blocked artery) and type 2 (the heart starved by another problem). They are treated very differently.
- The emergency rule: chest pain or pressure WITH a high troponin is a 911 situation. Do not wait, and do not drive yourself.
- Next steps usually include repeat troponins, an ECG, an echo, and - when a blocked artery is likely - a heart catheterization.
- The plan treats the CAUSE, not the number. Once we know why the troponin is high, the right treatment becomes clear.
When to Call Us — and When to Call 911
Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.
If you are not sure, call. We would rather hear from you twice than miss a real problem.
- Chest pain or pressure - especially with sweating, nausea, or pain into the arm, jaw, neck, or back - along with a high troponin: call 911 now. Do not drive yourself.
- New or worsening shortness of breath, fainting, or a fast pounding heartbeat: call 911 if it is severe, or call us the same day if it is mild.
- Chest discomfort that comes and goes, or feels like your usual angina but lasts longer or comes at rest: call 911. A high troponin with these symptoms cannot wait.
- You were sent home after a high troponin and new chest pain, pressure, or breathlessness appears: call 911 or return to the ER. The plan can be moved up.
- Sudden weakness, a drooping face, or trouble speaking: call 911. (Stroke and heart-artery disease often travel together; the emergency comes first.)
- You feel fine but got a call that a routine troponin was high: call our office promptly to arrange the workup - repeat testing, an ECG, and a visit.
- Questions about your result - a number, a word, or a finding on your report that worries you: call us. A short talk beats a worried week.
Office: (727) 943-5200
A High Troponin Is One Piece - Where to Read Next
- If a blocked-artery heart attack is the cause: see the Acute Coronary Syndrome guide.
- If chest pain or pressure was the symptom that led to the test: see the Chest Pain guide.
- If the troponin was found during or after a stress test: see the Abnormal Stress Test guide.
- For the closer look at the heart arteries with a thin tube: see the Coronary Angiogram guide.
- If heart inflammation (myocarditis) is the cause: see the Myocarditis guide.
Trusted Resources
Independent, evidence-based pages we recommend for deeper reading.
- American Heart Association - Diagnosing a Heart Attack — Plain-language AHA overview of how a heart attack is diagnosed, including the troponin blood test and the ECG.
- MedlinePlus - Troponin Test — NIH/NLM consumer test page; explains that a high troponin does not always mean a heart attack and lists the other causes.
- MedlinePlus Encyclopedia - Troponin Test — US National Library of Medicine encyclopedia entry on what the test measures, how it is done, and what results mean.
- Cleveland Clinic - Troponin Test — Patient-friendly overview of high-sensitivity troponin, cardiac vs non-cardiac causes, and repeat (serial) testing.
- Mayo Clinic - Heart Attack: Diagnosis — Mayo Clinic overview of how troponin and the ECG are used together to diagnose a heart attack and guide next steps.
- NHLBI - Heart Attack — Federal NHLBI overview of heart-attack symptoms, diagnosis, and treatment for added context on a high troponin.
Sources Used to Build This Guide
- American Heart Association — Diagnosing a Heart Attack [patient_education] — AHA overview of how a heart attack is diagnosed, naming troponin as the main blood test for heart-muscle injury and framing what a high result means.
- MedlinePlus — Troponin Test [patient_education] — NIH/NLM test overview; explicitly lists non-heart-attack causes of a high troponin (fast/irregular rhythm, heart failure, myocarditis, kidney disease, pulmonary embolism, sepsis, intense exercise) and that a high level does not always mean a heart attack.
- MedlinePlus Encyclopedia — Troponin Test [patient_education] — NIH/NLM consumer encyclopedia entry for safe plain-language definitions, how the test is done, and what normal vs abnormal results mean.
- Cleveland Clinic — Troponin Test [patient_education] — Patient-friendly source on high-sensitivity troponin, cardiac vs non-cardiac causes of elevation, and the role of serial (repeat) testing to see the rise-and-fall pattern.
- Mayo Clinic — Heart Attack: Diagnosis [patient_education] — Mayo Clinic overview of how troponin blood tests and the ECG are used together to diagnose a heart attack and decide next steps.
- Fourth Universal Definition of Myocardial Infarction (2018) [guideline] — Authoritative basis distinguishing acute MI from chronic/non-ischemic troponin elevation — Type 1 (plaque rupture / blocked artery) vs Type 2 (supply-demand mismatch) MI vs non-ischemic myocardial injury, and the requirement for a rising/falling troponin pattern.
- 2023 ESC Guidelines for the Management of Acute Coronary Syndromes (Byrne et al., Eur Heart J 2023;44:3720-3826) [guideline] — Current ESC ACS guideline; basis for high-sensitivity troponin use and the 0-hour/1-hour rule-out/rule-in serial-testing strategy that lets doctors read the rise-and-fall pattern over a short window.
- A 0/1-Hour Algorithm Using High-Sensitivity Cardiac Troponin (Inoue et al., J Acute Med 2018;8:47-52) [review] — Peer-reviewed explainer of the high-sensitivity troponin 0/1-hour rule-out/observe/rule-in algorithm and how serial values stratify suspected NSTEMI — the evidence behind the repeat-troponin pattern.
