Skip to content

Cardiac troponin I with guided percutaneous coronary intervention (PCI) measurement

Published: August 9, 2026Updated: August 16, 2026

This test measures troponin I, a protein released when heart muscle is damaged, specifically assessed during a procedure to guide coronary artery intervention.

Quick summary

["Helps doctors determine heart damage during or after a blocked artery procedure."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
92567-7
Short code
CT Guided PC drn+cath place
Synonyms
CT Guided PC drn+cath place
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
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 Is Done

Your doctor may order this test if you’re undergoing a procedure called percutaneous coronary intervention (PCI), where a catheter is used to open a blocked coronary artery. Troponin I levels help assess whether the heart muscle has been damaged during the procedure or due to the blockage itself.

What to Expect Before the Test

No special preparation is needed beyond following your doctor’s instructions for the PCI procedure. Blood is drawn from a vein (usually in your arm) before or after the procedure to check troponin levels.

What the Test Results Mean

Elevated troponin I levels after PCI may indicate heart muscle injury, which could be due to the procedure itself or underlying coronary artery disease. Your doctor will interpret results in the context of your medical history and procedure details.

Common Causes of Abnormal Results

Troponin I can rise in response to heart attacks, severe heart strain, or complications from PCI, such as blood vessel damage. Other conditions like heart valve issues or severe infections may also affect levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Troponin I (PCI-guided)

Frequently asked questions

Will this test be done before or after my procedure?
Your doctor will determine timing based on your specific procedure and medical needs. Blood may be drawn before PCI to assess baseline levels or after to monitor for damage.
What does a ‘normal’ troponin level mean in this context?
A ‘normal’ result means troponin I levels are within expected ranges for your body, suggesting no significant heart muscle damage during the procedure. However, results are always interpreted with your clinical situation in mind.
Can troponin I levels change after the procedure, even if I feel fine?
Yes, troponin I can rise gradually over hours or days after PCI, even if you don’t have symptoms. Your doctor will track levels closely to detect any signs of complications.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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