High Sensitive Cardiac Troponin - I (hs-cTn I )
The protein a damaged heart muscle releases. The high-sensitivity assay picks up far smaller amounts than the standard test, which lets a doctor rule a heart attack in or out within hours
Also known as hs-cTnI, hs Troponin, Cardiac troponin I, Heart attack test, High-Sensitivity Troponin I, High Sensitive Troponin-I
₹1,530/-₹2,100/-27% offFree collection on orders above ₹500/-
Prescription required. This test cannot be booked without one from a registered practitioner.
- Reports within
- 24 hours
- Parameter included
- 01see list
- Sample
- Blood
- Fasting
- Not needed
- Measures
- Troponin I released by injured heart muscle
- Identifies
- Heart-muscle injury, recent heart attack
Collected at home
A trained phlebotomist visits at a time you pick, from the next hour
Sealed single-use kit
Opened in front of you, and carried to the lab under controlled conditions
Report within 24 hours
On WhatsApp and email, with any value outside the normal range highlighted
What is the hs-Troponin I test?
High-sensitivity troponin I measures a protein that heart muscle releases when its cells are injured. Troponin I is found only in the heart, and the high-sensitivity assay detects amounts far too small for the older test.
Doctors use it to confirm or rule out a heart attack, to grade the injury after one, and to check the heart after surgery, chemotherapy or a severe infection. Levels rise within 3 hours of injury, peak around a day and stay raised for up to a week. A value above 34 ng/L, or a clear rise between two samples a few hours apart, points to heart-muscle damage. Kidney disease, heart failure and fast heart rhythms can also raise it, so it is always read with an ECG and your symptoms.
This test needs a prescription, and it is not a way to check chest pain at home. If you have chest pain, pressure, breathlessness or pain spreading to the arm or jaw right now, call an ambulance or go to the nearest emergency department. Home collection is for a doctor-ordered sample, and the report arrives on WhatsApp and email in 24 hours.
hs-Troponin I parameters1 measured
High-sensitivity troponin I
up to 34 ng/L
A protein released when heart muscle is injured, rising within hours of a heart attack and used alongside a heart tracing to rule one in or out
Reference ranges are the lab's defaults for adults and are printed on the report beside every value
How to prepare
- No fasting is needed.
- Upload or show a doctor's prescription; the sample cannot be collected without one.
- Note the exact time of the sample, since the doctor compares it with earlier values.
- Avoid heavy exercise for 24 hours before, as a long run or hard gym session can raise troponin slightly.
Who should take it
Only people whose doctor has prescribed it. That usually means someone recently seen for chest pain whose doctor wants a repeat value, someone recovering from a heart attack or heart surgery, or someone on chemotherapy drugs that can injure the heart. It is not a screening test and has no place in a routine check-up. Anyone with chest pain, pressure or breathlessness now should go to an emergency department, where troponin is measured on the spot with an ECG, instead of waiting for a home sample.
Before the visit
Tell your doctor about kidney disease, heart failure, recent surgery, a fast or irregular heartbeat, chemotherapy, and any biotin (vitamin B7) supplement, which can interfere with the assay; stop biotin for 48 hours before the sample if your doctor agrees.
Why take the hs-Troponin I test?
- Doctor-ordered follow-up: After a hospital visit for chest pain, a repeat troponin shows whether the level is falling.
- After a heart attack: Serial values grade how much muscle was damaged.
- Heart under strain: Used after surgery, chemotherapy, myocarditis or a severe infection to look for heart injury.
- Unclear ECG: A normal high-sensitivity troponin helps a doctor rule out a heart attack when the ECG is uncertain.
Questions about the hs-Troponin I test
What is the high-sensitivity troponin I test used for?
It detects injury to heart muscle. Doctors use it to confirm or rule out a heart attack, to grade the damage after one, and to check the heart after surgery, chemotherapy, myocarditis or a severe infection.
Do I need to fast for a troponin test?
No fasting is needed. Avoid heavy exercise for 24 hours before, since a long run or hard gym session can raise troponin slightly. If you take biotin (vitamin B7) supplements, ask your doctor about stopping them for 48 hours, as biotin can interfere with the assay.
What sample is taken and how does home collection work?
A small blood sample from a vein in the arm. A trained phlebotomist comes to your home with a sealed single-use kit, draws the sample in a few minutes, and records the exact time, which your doctor needs to compare with earlier values.
What is the normal range for high-sensitivity troponin I?
The report gives a single value in ng/L, and below 34 ng/L is within the normal limit. Healthy people have a small measurable amount; the assay is sensitive enough to read it, so it is not the same as an older troponin test reporting in ng/mL.
What does a high troponin I result mean?
A value above 34 ng/L, or a clear rise between two samples a few hours apart, means heart muscle has been injured. A heart attack is the most important cause, but heart failure, kidney disease, fast heart rhythms, myocarditis and pulmonary embolism also raise it. The number is always read with an ECG and your symptoms, never alone.
Who should get a troponin test and how often?
Only people whose doctor has ordered it: someone recently assessed for chest pain who needs a repeat value, someone recovering from a heart attack or heart surgery, or someone on chemotherapy that can affect the heart. It is not a screening test and has no place in a routine check-up.
How long does the troponin report take?
The report reaches you on WhatsApp and email in 24 hours from collection. That timing suits a doctor-ordered follow-up, not an emergency, where troponin is measured on the spot in hospital.
Do I need a prescription for the high-sensitivity troponin I test?
Yes. A doctor's prescription is required, and the phlebotomist cannot collect the sample without it. The result only makes sense next to an ECG and a clinical assessment, and a doctor needs to be ready to act on it.
I have chest pain right now. Should I book this test?
No. Chest pain, pressure, breathlessness, or pain spreading to the arm, jaw or back needs an emergency department now, where troponin and an ECG are done within minutes. Call an ambulance. Book this test only when your doctor has asked for a follow-up sample.
Commonly tested together
Often on the same prescription
What happens after you book
- A phlebotomist is assigned and reaches you in your chosen slot, as soon as the next hour
- The sample is collected with a sealed single-use kit and moved on a cold chain
- The report lands on WhatsApp and email within 24 hours